Googler here. This guys attitude does no one any good. He might just be "betting honest", but he sounds like an ass. Zoning out, doing code reviews, just letting the candidate talk and say uh, huh every once and a while? Terrible.

I've "only" done 50 interviews, and I don't particularly enjoy it that much, you do get a lot of bad candidates, but I'd never let that leak out into the interviews like that. I feel embarrassed for and because of this guy.