If you agree with this premise, that also rules out browser extensions as a universal solution because most users are on mobile. They also have multiple devices and somewhat frequently forget their credentials. Nostr is amazing and if you read my history I have only good things to say about it. But that doesn’t mean that the UX works for everyone, and I simply argue that key custody is a recurring issue in practice.
(Btw, by shitpost, I mean any random discussion such as the ones here on HN or Reddit. Not 4chan.)
