I recommend reading the letter. Many of the comments here seem to have missed that the comment of "the world is in peril" is not referring to AI, but to the larger collection of crises going on in the world. It sounds to me like someone who realized their work doesn't match their goals for their own life, and is taking action. Maybe the cynics have a point that it is an easier decision to make when you are loaded wit…
I keep hearing this but it keeps feeling not true. Yes, at some points in your life you're probably gonna have to do things you don't agree with, and maybe aren't great to other people, so you can survive. That's part of how it is. But you also have the ability to slowly try to shift away that in some way, and that might have to involve some sacrifice, but that's also part of how it is sometimes to do good, even if it's non-optimal for you.