Re: Doing things because we can, without considering if we should.
I think the problem with that argument is it's not even clear that strong AI is possible or even desirable economically, much less dangerous. Most of what we call AI now is just statistical training. If the goal is to protect against unintended consequences of software algorithms, well, that's a good idea, but why single out AI?
This strikes me as Musk hunting for his keys where the light is better, instead of where he dropped them. Of all the threats facing humanity that he could speak out about, killer AI is one of the most remote -- and also one of the easiest, since it doesn't exist yet. If he's really worried about the future of humanity, clean power generation, carbon capture, and even asteroid deflection are all problems that need solving. Instead he chooses to chase interesting ghosts.