I recently re-tried NOSTR (I technically have an old account I rarely ever use), specifically on Primal and the Fountain Podcasts app, and I really enjoyed how simple it was: just sign in, and BAM—you’re in.

No fuss, no extra steps.

It got me wondering—why doesn’t the Fediverse work like that? I know that using special login codes might be too complex for most people, but why not allow usernames and passwords instead?

Imagine a single sign-in for the entire Fediverse. You wouldn’t need to worry about instances, and onboarding could be much simpler.

Has this idea been considered, or is there a technical reason why it wouldn’t work?