Why does this board think that the movie endorses these theories?
It seems like nobody on this board stopped to consider what the film itself might be about, and to consider its own formal qualities, and the choices made. The lack of a narrative documentary voice alone makes it hard to see this as a conspiracy theory movie. In fact, I wasn't so keen on watching it because that's what I expected it to be: a bunch of people talking about their weird, strange takes on The Shining's hidden meanings, going well beyond solid interpretation of imagery and so on.
But the movie isn't presented as it might have been. It's not the documentarian commenting on the material at all. It's a fascinating, experimental film if you pay attention to what it doesn't do. And one of the things it doesn't do is take a stance on any of the people talking and their theories. At all.