SN is a peak to 5-7 years into the future. Using a LN wallet as your identity/login will ultimately become the norm across a big chunk of the web, especially communities centered around discussion or content (which is a big chunk of the web).

Hardware devices (not your phone) will be normal for most other things. Maybe they will be the same thing, but the UX will be worked out.

Where we are going... we won't need a password manager. Hard money (i.e. energy) will authenticate you.