This imagines that the only way for AI to do serious harm to us (not even in a "kill everyone" sense) is for it to be some super-competent Skynet-level time traveling demigod. I think it's much more likely that if there is some sort of AI calamity resulting in a lot of deaths, it's because the AI just doesn't work very well and ends up breaking all the HVAC systems in a country during a heat wave or something, rather than a singularity-type event where it "decides" to actively start hunting humans.