Honestly I can’t do anything but shake my head in disapproval about crypto-art (and crypto currency in general) when it involves wasting so much energy.
As long as there's no actual widespread fully working currency using only PoS, it's a bit like justifying the emissions from flying by pointing to experimental solar powered aircraft, and saying all flights will be solar powered any day now.
Cardano already uses PoS
otherwise yes, energy usage will be dropping massively on most networks with pos upgrades.
This is literally the worst argument against crypto.