> Ethereum is switching to proof of stake, which uses a normal amount of electricity and forever solves this issue

This has been said for a few years now. The originally deadline for this was January 2020. Suffice to say, it didn't happen. I'll believe it when I see it.

Ultimately, Blockchain seems to me to be a solution in search of a problem. There are a lot of issues with the current implementations, and a lot of words about how to solve them, but these are hard problems, and there's no guarantees they're going to be solved, and they are often problems that our current financial tech industry just doesn't have.