Security wise, there´s probably no reason to consider leaving Bitwarden. Feature wise, bitwarden already has almost all bases covered when it comes to being a password manager. UI is where it would probably be easiest to get ahead. Pricing on the other hand seems a bit expensive on Protons side. The have the “limited offer” now for 1€ a month, which is already 2€ more per year than Bitwarden, but they write that the regular price would be 4,99 a month, which would be beyond rough compared to BW.
I´m sure the will be no false strikes at all. And even if, I´m sure they have a quick and easy appeal process in place, just like they have with copyright.