Actually, people wouldn't choose something that doesn't work, just to signal their irrational ethics. Ethereum is not designed to be money, and it has huge array of problems in addition to using weak PoS consensus in the future. It is not properly decentralized, and therefore it can't deliver the promise of money that is equal for all people in the world. In my opinion, it's highly unethical to push Ethereum or other corruptible systems using this environmental narrative.

Most people in Bitcoin, especially big investors, know the difference between these systems, and wouldn't use a PoS currency for any price.

Mark my words, when Ethereum switches to PoS, its price will crash.