Good points. I think you're touching on something fundamental, and that is that on Nostr you have to accept that all accounts are throwaway. And act accordingly.

The architecture mandates this. Call it architecture-mandated psychology if you want a fancy phrase. Anyway FROST isn't a solution, it just highlights the problem from another direction.

Sadly, conventional micro-blogging is a bad use case for a world in which all accounts are throwaway. Conventional long-form blogging even worse.

So the biggest problem isn't the architecture. It's the current leading use case.