Unlike most other commenters, I applaud him for acting on his principles. If you sincerely believe that, of course you should act. You might not succeed, but your voice might be the one that tips the scales and starts a broader movement.
This doesn't mean I agree with him. The fears of doomsday caused by rapid takeoff have been with us since day 1 and the mechanism is always basically "AI invents magic that sets it free of any physical constraints". Self-replicating sentient nanobots or something like that. I think there's plenty to be worried about with AI, but runaway scenarios are pretty low on my list.
This doesn't mean I agree with him. The fears of doomsday caused by rapid takeoff have been with us since day 1 and the mechanism is always basically "AI invents magic that sets it free of any physical constraints". Self-replicating sentient nanobots or something like that. I think there's plenty to be worried about with AI, but runaway scenarios are pretty low on my list.