I guess, if viewed cynically. It seems more likely to me that he was sincere, just wrong. That's the "radicalized" bit I was talking about. The SF tech scene has a smell right now that seems to me a lot like what we saw with the Gamergate incels a decade ago. And that... didn't lead to good places.

Radicalization happens to everyone, even the rationalists. Maybe it's just time to cool off.