All Hoback proved to me is that he understands the shortcuts you can take when making a documentary. It alone among creative works allows you to hide all your errors behind editing, while making baseless and dangerous accusations seem plausible.
I agree. It very clearly used a lot of the common tricks you see in documentaries.
I honestly think they just chose to point the finger at Todd because he's one of the people they were able to get for interviews. So they could set up the confrontation scene at the end.
I wasn't as harsh against the movie in my review, but the more I think about it the more I think it really was a reckless and unethical thing to do.