My impression is that he's very technical, but his background seems to be in search, not AI. Perhaps there's AI work in his background that isn't evident just

My impression is that he's very technical, but his background seems to be in search, not AI. Perhaps there's AI work in his background that isn't evident just looking at his LinkedIn page. Perhaps he doesn't have a long-term AI background but has come up to speed since getting AI put on his plate at Google. Or, at least come up to speed sufficiently to be able to distinguish between bullshit and non-bullshit.