I don't know, but I don't see how that is an interesting question. As crypto critics rightly point out, the vast amounts of energy that the financial system con

I don't know, but I don't see how that is an interesting question. As crypto critics rightly point out, the vast amounts of energy that the financial system consumes provides a huge amount of different services; from bank branches to regularity compliance. From a literal technical point of view, storing a ledger on 10k computers consumes more energy than than storing it one one. But maybe the backup and operational infrastructure of a bank to manage that one centralized ledger consumes more energy than 10k PoS nodes. But then people also build all kinds of services around those blockchains which require their own computers. In both cases, you get something unique: the blockchain gives you permissionless financial network, your bank gives you a regulated one. Meanwhile, a single branch of McDonalds consumes many multiples more energy than any PoS blockchain. My point is really just this: Critics can try to critique PoS blockchains as useless. They may also try to ban them using arguments around say, securities laws or AML. But the energy argument is DoA.