I will try and answer these questions. Because although it is a good idea for you to discover the answer yourself based on the Farsight material, I know these are common questions that will be asked (they're good questions) and following up with recommended research rather than the direct answers has a tendency of turning people away.
I won't be checking everything and referencing all my answers, so there's a likelihood I'm going to be off on parts of my answer, so I'll encourage anyone to correct me as I go. Consider it a "wiki entry" on a planet where unfortunately even a wiki becomes easily severely corrupted.
This is all based on what I know from Farsight publications and the publications that they base their projects on or that they directly recommend. But again, don't take my word for it. In fact if you find corrections to be made please make them.
Q1. In general, did the ISBEs behind humans exist before life on Earth? Under what circumstances does a new ISBE come into existence?
A1. God was split in a quest for self realization, and this is essentially the "ISBEs" or at this fundamental level I might even say "soul". You could call them human souls but in fact the word "ISBE" is to help distinguish from something more broad. Everything is alive and comes from some sort of "source / soul" but an "ISBE" is that source life necessary to power the intelligence (and even some of the physical movement and environment) of a sentient being. We have essentially our own universe under our control but we choose a collaborative universe out of interest. ISBE is not necessarily the most direct source, but like the avatar that we place in this shared universe and while it is impervious to "death" it has somewhat physical properties. It can be somewhat caged, although that cage requires more than just physical methods and it requires a compromised belief. You can break free from the cage by pure self realization, but no one says that's easy. With any hope, we will collectively break the bars and then the complex self realization that may take a full lifetime to master will no longer be necessary. Just the more simple realizations. We were here since the dawn of this universe. As we start to discover our own history we will probably discover that it functions outside of linear time and its origins are "outside" of where any form of measurable time starts here.
Q2. How did we come to be born here on Earth as humans, and what was the role of the bad ETs in that?
A2. While there is no one simple answer (the planet is populated by many different political agendas throughout the galaxy which I'll go over a bit) About 70,000 years ago, many of us were refugees from the cataclysmic galactic war (that was mostly a resistance to holocaust and invasion - a galaxy wide mass imprisonment). So: a large group of us broke free of a previous prison planet, killed off some reptilians that were living here, and took the planet for ourselves to built a sort of base of resistance. This might be the atlantean / Lemurian civilizations that Waldorf Rudolf Steiner speaks of (but don't get too attached to names because this current prison regime has a tendency to corrupt all the names). Anyways, their plan worked for a while but the holocausters weren't gone (and still aren't, but are slowly receding) and they used long range mental manipulation to essentially wipe ourselves out physically, and then using some vacuuming / imprisonment technique they corralled us here to be reborn as memory wiped idiots who now essentially serve them life after life. But many of us have origins in other places where societies found us too difficult to work with. We were brilliant and just wouldn't fall with the generic (while perhaps somewhat benevolent) program. So the governor's of our old society got tired of it, and they were worried a banishment doesn't get rid of us permanently, so they sent us to the prison. Unfortunately it's a prison with no planned time limit, that's the real evil behind it. Some of us were straight up perverts and psychopaths. Who knows, if we ever break free out of here (a goal we *must* take seriously), we will probably find that still a few of us . . . need some sort of justice / solution still. But not a prison with no time limit.
Q3. What exactly is the business of the bad ETs on Earth? I understand that they are interested in using us somehow in their war, but how exactly? Is this a plan for the future, or have they already been using humans in some way?
A3. ISBEs *is* their business. I would say "demonic soul harvesters" but it becomes a bit too religious based. They use ISBEs for anything and everything you can think of and some ways that are hard for us to think of. And yes, the ideas behind that line gets very dark very quickly. Child prostitution on and off planet, often to violent predators. Cannon fodder, Sometimes pretty dignified (but evil) soldiers. You can check out things about the 20 and back program where ISBEs are extracted from their human bodies, time travelled, go kill off a bunch of their enemies (those that are probably trying to rescue *us*) in the sort of present past future whatever, and then recycled back into some body here on Earth. The entire thing is just more f*cked up than any bad story you've heard. The "business" model probably works like a sort of "rental" scheme. You can rent an ISBE, doesn't matter what you do with it, but if you "free" it that's probably the most costly thing to do. And if you don't pay costs or try to war with them, then you risk getting captured into the prison. There are likely many humans walking around on Earth today that are off-planet customers. They leverage a sort of collateral that can be used in case they stir up sh*t, they agree to very specific terms, they do whatever they want while they're here, and then as long as they don't start a fight with the guards they can leave with whatever collateral they had left over.
Q4. After full disclosure and the hot war, with the destruction of the bad ETs’ infrastructure on Earth, will the death trap be destroyed? How can we escape from it?
A4. Yes. Remember we "Deviant" minds are some of the most unique in the galaxy and are considered perhaps necessary to locate and dismantle the death traps. This is why the "prison break" is needed from the inside out. The outsiders are saying "look - you're the geniouses that have to break out of here. You're the ones that are better at doing this if we can only get you to realize your own true selves." But currently, because we are in a sort of idiot zombie state, they don't want to be subservient to us (and never will be). We are enslaver-programmed and we are encoded with special programs to betray our own liberators. Did you ever try to "free" a bunch of cats that were stuck for years in some insane cat house? It's not pretty.
And your very last question deserves special attention because of course that is what all of this is about. We wouldn't be talking in these weird forums and subreddits and counterculture niches if this wasn't a priority.
I presume that there are 4 ways to escape. Not all of them are benevolent.
1 is you forge into your being the capacity to serve our enslavers even better than now, provide them unique talent, entirely for the purpose of helping them to enslave everyone else further, but somehow compose a rebellious enough nature within you that they want to bribe you with freedom rather than simple comforts. At any rate, they will not want to make you directly free. They would rather turn you from servant to customer. And also leverage you to do very horrible things to make you guilty and afraid of exposure. But honestly, once you've been exposed to the whole scheme they'll know that's not the true temptation within you so maybe give up that option.
2 As Lao Tzu, Buddha Siddhartha and others probably did, give up *all* your attachments. Including attachment to yourself as you know yourself. Transcend your understanding of time and space to realize that you can send messages to your future and past selves. Meditate to the point that a big part of your mind works like a receiver rather than just an analyzer. At some point, when your consciousness is this pure awareness that was zapped by the death traps in, it has a moment of pure naive awareness before they try to douse it with all their programming. If you can encode yourself in that moment, you will realize a way to escape. And perhaps you can learn to communicate with our liberator ETs and find an easier escape route.
3 The main way we are all being currently pressed to escape - join the resistance. Fight. But in that fight, learning to remote view is crucial because while "remote viewing" is just one example of psychic ability, it's the kind that is very measurable. You can prove your psychic abilities to yourselves and your peers and when that realization hits this whole thing becomes more than a stupid text file on a weird internet forum. You suddenly go "holy sh*t this entire f*cked up ridiculous thing that Tazz wrote actually has some truth to it" and it goes on from there.