Seems like it would be less useful on a non-Apple device though. I don't know about you but my Apple login is a nightmarishly long password and 2FA. Authenticating through FaceID or TouchID is what makes it usable.
This type of issue is why I use LastPass, and not Apples Password manager. I'm very weary of how this would work on a non-mac device and I definitely use multiple non-mac devices regularly through a given day or week.