I imagine there will be a lot of people who agree that AI is dangerous, but continue to use it, because provides something of value to them in the short term. In his case, he might really believe AI is a potential danger, but also wanted to get the notoriety of publishing, and the money and excitement of founding a successful startup. There's not a big difference between our kind of hypocrisy — supporting something we suspect is destructive in the long term because it is neat, convenient, or popular in the short term — and his kind. Both are part of the reason things get worse rather than better. His kind is more lucrative, so it's actually less surprising in a way.