Doesn’t keypass support passkeys?
As you can see from the thread, this question is divided amongst the cult of “sensible privacy is a thing provided you’re not a criminal” to the cult of “everybody’s on a FEMA/🧊 spreadsheet and they’re working their way down”.
I’d say make sure you use a separate password for proton pass, it’s an advanced option. You are far more likely to get hacked for your money and password manager goes 97% of the way to defeating those attacks.
Don’t take your eye off the ball. The real threats to your wallet have always been the shareholders.
Sorry, I was thinking of keepasssXC which does have passkey support