I already mentioned that I use a password manager. The problem comes if I have to create a password on my phone, where I have a read-only copy of the password v

I already mentioned that I use a password manager. The problem comes if I have to create a password on my phone, where I have a read-only copy of the password vault. OAUTH is a far better solution in general. If there were a standard privacy-respecting third-party to replace the Google and Facebook options, I'd be all over it. But I'll happily let Google know that I'm playing a game in exchange for not having to manage yet-another-password.