If you’re already paying for proton unlimited I don’t see any reason you shouldn’t go for it.

Also, forgive me if I’m wrong, but your post makes it sound like you don’t know, you can just export all your passwords as a file and import them into proton all at once

Proton’s free plan is supported by people with paid plans

Why wouldn’t out be? Proton has always had a free tier, this just makes it easier for free users to connect to a vpn