Eliezer is a wackjob. I'm pretty sure Kiwi Farms links are banned on this site but you should check out his thread. Or r/sneerclub.
Recently, an actual AI researcher posted on his site an extremely detailed response to his claims to which he responded "this is kind of long".
That said I don't know who Hotz is or if he's more competent
Eliezer is probably going to seem convincing, he's a great writer and a reasonably eloquent speaker - his audience is humans.
Goerge Hotz's competence is machines, and he's exceptional at interfacing with them. Yes, I trust the less eloquent tinkerer who's only famous for his preternatural understanding of machines over any theoretician and 1000x more than a (pretty good!) writer.