http://vimeo.com/28466163
This is a short documentary on 'incels,' involuntary celibates.
They are attending a meet-up. It's interesting to see them interact socially. I wouldn't be surprised if these people ran in the same circles as Elliot. There's a lot of overlap in the things they talk about.
I really think he had some form of autism. The dire tone he tries to affect in a lot of his videos reminds me of chrischan. His way of thinking is extremely systematic. He thinks all he has to do meet certain criteria on paper, and a girl will desire him. He seems completely oblivious to nuances of personality that girls find attractive.
Autistic people will also often have a pet project or hobby that they will completely obsess over. It's really unfortunate that his project was becoming an 'alpha' male, something he seemed fundamentally unequipped for.