Consumers just need to know how it actually works, at least at the most basic level of what the costs are. From there either consumers don't care or stop using it. Do we really need the government forcing more morals on us through another sin tax?
That worrying about whether doing bog standard everyday activities like turning on a computer and running a program is "bad" is just silly and even if it did work would cause mass anxiety.
It's not a sin tax, it's a tax on causing externalities. There is no need for an AI tax because AI is not in and of itself a thing which causes environmental damage.
Well, unless it goes Skynet, but I'm considering that out of scope.
I call it a sin tax in this case because it would be a government taxing something they don't want people doing, or want us doing less of. Where income tax isn't meant to make people want to reduce their income, taxes on alcohol, cigarettes, or in this case oil extraction or burning are specifically implemented to move the market.