I get that they're trying to protect legal copyrights, but that begs the question: why they don't just post the movie themselves? I mean wouldn't they want their spiritual food available to the bazillions of people who are on Youtube every day? It seems that their message would make it to more people on an average Friday afternoon than it would knocking in the doors of empty houses.
I know next to nothing (actually nothing) about posting stuff on youtube. If there's not a way for the owner to disable the comments, I'm guessing that's why they don't do it.