In his videos he often refers to farsight work. But he also works closely with Corey Goode, which doesn't strike me as the most honest storyteller
Yes he has referred to Farsight's work in a recent interview I've seen with Elena Danaan (who has a fascinating story). Like Courtney, Michael has spent many years risking (and eventually giving up) an academic career in order to bring truth to humanity, and help implement a new paradigm, despite ridicule from the mainstream (which now seems to be backfiring). Of course he's legitimate, he's a great researcher yet doesn't claim to be a firsthand experiencer or anything to my knowledge. I happen to think that Corey Goode is authentic (the remote viewing data from the team at Technical Intuition supports this) but even if he wasn't, it wouldn't take away from Dr. Salla's intentions.
I also have a personal synchronistic experience that involves him, if anyone's interested. One morning last year I was in a state between asleep and awake (almost like sleep paralysis) and felt this onset of intense energy. I could "feel" this presence standing by my bedside, though I couldn't see very clearly. It was almost as if words channeled through me telepathically: "The truth is it's not nonsense," I said without thinking, before snapping out of it. The next hour I lay in bed pondering the meaning of what came through me -- what, exactly, was "not nonsense?" Or did it not mean anything? I had no clue. But it's not something I would have said consciously. Then I go on youtube and the first video I watch that pops up on my recommendations is a new thirdphaseofmoon video with Michael Salla, shortly after those Navy disclosures. He ended the video saying "This is going to be a seismic shift for anyone who dismissed the UFO phenomenon as nonsense" -- along that same wording. And then it all made sense. Felt like confirmation from a friend.