I totaly agree with you, I am somwheat new to the fediverse, I discovered it somewhere between 2018 and 2020 and discovered nostr a few years later, I didn't got it at first but today I understand how interesting it is to build social network or plateformes, even though that Nostr can do far more than social media.

1. Because the admin don't have to manage the authentification process of its users.
2. Because users don't rely on a central server to keep their social graphs or interact with them.
3. Because owning some private keys makes you owning your digital identities.

Of course the UX isn't as great as the fediverse or not close to centralized opaque surveillance plateforme but it has rapidly improved and I had much joy discovering the bridge builded by soapbox and really want their Ditto servers project to become a thing.

I really think that we should teach kids asymetrical cryptography at school because if we want to build a digital society we need strong encryption, true authentifications and data integrity checks. But I'm a dumb utopist...