Even stablecoins aren't so great for the environment. Proof of stake isn't as bad, but also doesn't offer much beyond traditional systems once KYC is needed.
Stablecoins are great. The only way to be debanked is if the stablecoin issuer explicitly blacklists your address, which is a public act which they will be forced to justify.
And Ethereum's Proof of Stake algorithm is highly censorship resistant. That's why it took seven years to design.
Am I missing something?