My understanding [based on all the Farsight Remote Viewing and Engineering data] is that the Pyramids were primarily focused on affecting the "Beliefs" of Humanity.
Their design does show (imo) that they did generate energy. They seemed to channel Electricity through the Limestone, create resonances which split water, which was burned to create an oscillator which then pulled in Etheric Energy.
The argument against them being some type of Energy device for wider society is that you don't see any evidence of an Electricity grid. That is, either wired or wireless. And it is all too beautiful in appearance to be what we would call "Industrial".
If (surely they did) have power generation, then I think it would have been done somewhere else in a setting less dramatic. And more Industrial.
Generally, the Farsight Remote viewing points to a Society that was pretty oppressive, certainly in Egypt. We don't have any Remote Viewing to say what life was like in an average house. Did they have a big-screen TV and a Gameboy, for instance. I think not but happy to be proved wrong.
My sense is that we are more fortunate now.