You are assuming that there's something bad about everything you believe being false. There's a fair amount of evidence that it's a good thing. EG religious people being happier and living longer
He's certainly 'notorious' in certain circles. He used to be considered a troll in certain newsgroups, because he's very argumentative.
I think he is in some ways the prototypical hacker. He's very good at what he does, but he struggles to do anything with financial value, and he's got very bad interpersonal skills.
He's done quite a lot of Emacs work, particularly around trying to make it easier to work with. His work was very helpful to me when I was starting out with Emacs, so I've given him some money. His documentation saved me weeks of work over the years, so giving him a days wages is a no-brainer.