Though I met many wonderful people in tzm and they all have good intentions, it also tends to attract cold so-called "rationalists" or "realists" which I could now just as well call "materialists", "atomists" or even "naive scientism disciples".
I have always believed that the whole association between scientism and reason is a confusion. In reality, scientism is not something rational at all. These people literally have faith in science as if it were a religion, and many of their claims are plain illogical. There is no reason there. It is pseudo-intellectualism. Which is false and makes people believe that if you are rational you are closed-minded and/or materialistic, which is not true at all.
About the Zeitgeist movement can't tell you much, in my opinion, I always saw them as very linked to communism, and that's not a good thing, I think. Just my perception.
See ya.
RE: Why I Left the Zeitgeist Movement | Pt.1 - The Psychedelics Conspiracy in Academia