I can think of several computer programs that are stored in big 5.1/4 floppy discs that could end humanity in... half an hour.
There's just no plausible way, in the real world, that a computer program running in some datacenter is going to make this happen. Or anything of any dire existential consequence. It's not a real threat.
Yes, but to make "apocalyptic" scenarios happen your AI would need to manipulate at least millions of people. So far it's not yet clear they can successfully manipulate even one, or even that "manipulate" is a coherent concept, since LLMs pretty clearly have no agency or intrinsic goals. So like... I guess if we start seeing AI systems autonomously throwing elections and starting wars I'd be more concerned? It doesn't look likely anytime soon.