Dude. 55 million people lost power for half a day. The world did not come to an end. Yet you're still harping on traffic lights.
Natural disasters destroy infrastructure regularly. Bad things happen all the time. Hell - the Soviets had their entire nuclear arsenal on automatic and humans still managed to prevent nuclear war.
There's still this assumption in your thinking that AI will have the ability to destroy the world. You've done nothing to back that up. You keep waving it away with platitudes like "just because it's too complicated for me doesn't mean it's impossible."
Nobody's saying it's impossible. But "possible" is a long fucking walk from "probable" and three connecting flights and a layover from "inevitable." And your best efforts - EVERYONE'S BEST EFFORTS - have gotten us no closer than "they could produce false data."
False data doesn't end the world. It lowers productivity. "Lower productivity" isn't "the threat from artificial intelligence."