His central thesis just seems akin to the South Park underpants gnomes to me. Like (1) develop an AGI with superintelligence and then (2) "???" and then (3) humanity is doomed! Not in disagreement with the premise per se, but the "everybody suddenly falls over dead" thing is just so preposterous to me on a material or pragmatic level. But perhaps I just lack the imagination to see how physical agency could be achieved without us noticing it at all and then just "pulling the plug" if you will...

That's wild and dumb. I need one!