It's hard to fully trust anyone's impressions of anyone, particularly if they're confident about it. (I don't particularly trust even my own. :)

Perhaps he sat down with you and said, "I have no interest in talking about anything. I have many opportunities to build products, start companies, get research funding, etc; but I simply choose not to, because... it bores me and that's how I roll now." Ok, then your reasoning is impeccable. (Or maybe you offered him carte blanche and he turned you down?) But from this one post, it's unclear you got into his head, or that he felt comfortable engaging with you.