Note that Proton only supports it on Windows.

The answer is to use Fediverse alternatives to Reddit and Twitter.

Which OS are you using?

It doesn’t have feature parity (yet?). If you’re happy with Bitwarden, I’d stick with it.

Correct. It’s not self-hostable.

Same. I’ll continue to use Bitwarden. I think it’s good to have other open-source options out there, though. Proton Pass is definitely prettier and will appeal to some people that care more about the aesthetics.