Even more so than John Romero.
He wrote a game called Battlecruiser 3000 AD, which is universally considered one of the worst ever made, and it took about nine years. He claimed it was the best ever, and, in fact, still does. He gets into flame wars on bulletin boards.
Not only that, but I recently discovered he claims to have a PhD, despite tons of evidence that he does not. He also threatens to sue people who disagree with him, although never follows through.
All about Derek Smart . . .
and a truly hilarious and disturbing flame war on a bulletin board with him.