What’s hilarious about this argument is that people with an axe to grind with cryptocurrency suddenly become hyper-libertarians. They criticize its waste and inefficiency, while lauding fiat currency backed by the state, with all its largesse, as a paragon of efficiency. It’s sour grapes disguised as moral righteousness.
You’re not factoring in the military industrial complex cost of military enforcement of fiat currencies. You have to be factoring in the cost of militaries, fossil fuel exploits, and more.
The cost of operating US dollars as a transactional concept is many, many, many orders of magnitude greater energy cost than Bitcoin.