[protonmail]

It's really no different to having say, a password manager, and Google authenticator both installed on the phone. At that point, you might as well combine both into a single app for more convenience. And if you don't want both on your phone, then either you don't use 2FA or don't use a password manager, both of which probably leave you worse off.

Btw, the thing you mention for Proton Drive is only for files which are shared publicly. For sure the audit results are not perfect when viewed in isolation, but when compared to other password managers, it's another story.