Seems far less scary to me than, say, building an electrical grid in a cold climate, where if it fails for a few days people start to die. Oh wait...

Why would they die in cold climate? I would expect them to die in hot climate (no AC - heat stroke, no refrigerator - food poisoning), not the cold where they would have wood/gas heating.

Electricity is very predictable and not under control of one or two nations.

which is more likely when they start vibe-coding grid managers

It's the same, on steroids.