I don’t see a major split in the Bitcoin community. Any people that are interested in PoS are already working with other coins. Since we’re talking, PoS is deficient because it’s actually quite similar to the financial system we have now. The largest stakeholders benefit directly with each block. Power and wealth centralizes from that point.
With PoW systems the miners have to actually expend resources to earn newly distributed coins. It’s a fairer and obviously more decentralized system.
With Ethereum specifically, they had a large premine when they started. The early holders still have a lot of coins they were gifted and they will have an outsized effect on consensus in PoS system.
Also with Ethereum you are pretty dependent on Vitalik. Here’s something he pulled yesterday. Rugged a lot of token holders. Evidently going to donate to charity? I would say there’s better ways to do that.
He’s a single point of failure. Just like Elon can be coerced by outside forces, so could he. There’s no such figure in the Bitcoin community to corrupt. If people try to attack Bitcoin, like Elon, they get scorched.
The above reasons are why I’m skeptical of Ethereum and I own only a very small amount relative to Bitcoin. It’s probably 97/3.