Yeah, I think people took that comment about 'instantly killing us by releasing a poison in the atmosphere' a bit too seriously. Maybe because it was so specific, idk.

But he does have a point that we should be concerned about an autonomous entity smarter than humans in all cognitive ability. An entity that has no known desire apart from a core function to improve and adapt to its environment.

Such an entity would most certainly begin competing with us for resources. So, his emphasis on alignment is correct, and he is probably not overstating the difficulty in achieving that.

Everything else he says is a bit too doomer with little to back it up.