Holy cow. My mind is blown. Everything from the title, to the director dying 5 days after submitting the final cut, to the location chosen to film the cult party. These links are a long read but a great explanation of the movie.
So many unbelievable things that I've come across in this group are confirmed by this movie. I saw someone mention it in a comment months ago and glad I finally came around to watching it. It was very strange in the beginning, but you have to remember you're not watching a regular movie, you're watching someone trying to show you what's going on without explicitly saying it. After reading the above articles I am just blown away.
I did not like the way the movie made me feel. To the questions of why would they release the movie if it was exposing them. My answer would be it is just another form of their magic. Casting a spell.