Any security solution that involves lay people having access to keys is NOT secure. What you call "absurd user-hostile" is actually basic security in the real world with non-technical people.
Technical people can already be secure using appropriate protections, but even for them it's very difficult to do it properly.
Lay people will, without understanding what they're doing, ask the password manager to give them their password to enter manually on any phishing website as they'll think that it's not working because it's "broken". So , absolutely no, password managers do NOT prevent phishing.
If you think I am exaggerating, well, I work with this and I assure you it's even worse than that.
Technical people can already be secure using appropriate protections, but even for them it's very difficult to do it properly.
Lay people will, without understanding what they're doing, ask the password manager to give them their password to enter manually on any phishing website as they'll think that it's not working because it's "broken". So , absolutely no, password managers do NOT prevent phishing.
If you think I am exaggerating, well, I work with this and I assure you it's even worse than that.