If you found out that he had been behind some kind of huge success, would you agree with him more? ... If he could fill a paper with things that he's done for people you've never heard of, would that make him more credible?Honestly, yes. Because we have a thirtyish guy talking about "success" in the abstract, and promising that he knows how to achieve it, and yet he doesn't seem to have much in the way of concrete achievements to back it up.
"If you're so smart, how come you ain't rich" is usually a dickish sort of question, but when you're posing it to someone who is sitting there actively claiming "I'm gonna make us all rich by my awesome smarts" then it's a fair one. At one point he claims that the project will become profitable just because he wills it to, and therefore it will; if his force of will is truly that powerful then one wonders why he didn't will himself out of being not-rich way back in 2004.
It's only because he insists on talking about how awesome he is that we ask him to back that up with actual achievements.
Of course even if he were rich and successful, his attitude would still be dickish (you'll note that the truly rich and successful people who post here generally don't go on egotistical rants about their own awesomeness) but I'd have a little more tolerance of it under those circumstances.