So, as more nostr webclients and web micro-apps get made that interact with my keys (by them being stored in a browser extension), I wonder if browser extensions that hold pub&private nostr keys will become the preferred means of logging in to everything online.

Secondly, are there any browser extensions that hold more than one set of keys? Because in this reality, do you want to link your political shitposting and your online banking with the same set of keys? Cause if you do, you might not have that bank account for long, lol.