Again, this just feels like throwing your hands up in the air and saying "it's too hard to decide!" But we have to take decisions somehow if we're going to do anything.
Yes, that's the challenge of centralizing economies. You aren't going to be able to do so efficiently because you don't have every person's preferences.
If by "we're going to do anything" you mean presumably fiat power to ban LLMs, then you're better off using that fiat power to just put a sin tax on carbon emissions and letting people decide where they want to cut back.
Take one fewer hot shower a week and you've saved enough energy to power a lot of ChatGPT queries. Play one fewer hour of Minecraft. Turn off raytracing. Eat one fewer burger per month. All of those things would save more energy than forgoing a few ChatGPT conversations.
