Computers absolutely can be overworked. Plenty of outages caused by system overloads. Or a system deletes a file because it believes it to be no longer in use but only because some queue was full. I’m not arguing that it’s not a problem because humans have the same problem. Part of my job is making sure humans can’t fuck it up either. I’m saying “assume the worst” and make sure the processes catch human and AI mistakes.
Also, I think Nick makes the same point as me: AI will attempt to kill us.