The root issue isn't his fanaticism, but the manner in which he chooses to articulate it. He is so dogmatic about even the most inane minutae, that he turns much of his presentation into a self-satire (if it was not for the fact that his presentation style is so dull and pedantic...which it is. As public speakers go, I have never been wowed by him; even Bruce Perens, who is by all accounts the Emo Phillips of FOSS, does a better job).