I don't think you should really call for some one to be banned for posting things you don't agree with. I do agree that he's coming across as nuts, however I don't think it's even the subject matter that's making him look nuts it's the fact that he's going on and on about it when clearly no one wants to know. He's been a member here long enough to know how people react to this sort of subject and as such, I think he's nuts for thinking people would react any differently for him.
To be honest, I don't think people would react any differently regardless of the truth of these sort of threads. I don't think people like the implications of how they're missing something on the goings on of the word, or something like that. I think a lot of people here like to stick to the "official" versions of things and feel really uncomfortable even considering anything else, while moaning about the people behind the official versions (governments).
I'm not saying I believe or agree with the OP, I haven't even looked at any of his links and I don't intend to because at the moment I've got other stuff to do, but I do think the above is true about the attitudes of a lot of the posters in these sort of threads, and I don't think they're any better than the OP they lash out at and complain about.