They made a pretty good case through a series of generally ethical experiments to prove that at least some forms of psychic phenomena like remote viewing are almost certainly real, if not exactly reliable or common. I thought that was pretty neat.
Other than that, no, I can’t think of much.
I mean, these are all real CIA documents being referenced, you can go read them yourself. It’s trustable in as much as you can trust the CIA to be straightforward within their own documentation that wasn’t declassified until 20 years later.