> ...and I can't really find anything Bitwarden does that much worse than any of these.

I feel like I can think of a lot but I'll give you one that, to me, is Bitwarden in a nutshell:

What happens if you open your browser, go to https://news.ycombinator.com/login, and hit Bitwarden's autofill shortcut? Nothing, because you didn't log in to Bitwarden first. Pretty much every other password manager will ask you to log in and then they'll autofill.