It's possible. But it's also possible that he considered everyone else far below his acceptable level of skill and refused to delegate or allow other people's code into "his" codebase, even going as far as to ignore a team-blocking ticket for months until someone else picks it up, then blocks on the review, then when management finally say "get on this", rewrites it himself and commits his own code without review.
What? No, I'm not bitter about recent experiences. Not at all.