I don't use nostr, but this is one of those really upsetting things where technical people are utterly blinded by their dogma.

How did you register as BinaryIgor? You and ycombinator exchanged a pubkey. ycombinator registered theirs with a DNS register, while you threw yours away.

ycombinator has 100% ownership over your identity. There is no way to prove to me you are you without ycombinator.

Having ycombinator be your naming service is useful, and so any distributed system would be wise to re-implement an analog.

But what a supernet signing scheme offers is in addition to "forgot my password" it also has a "ycombinator disappeared / betrayed our trust" feature where your ID and messages exists outside ycombinator - as long as you remember your password.

What we're currently doing: throwing away our keys and let ycombinator resign our messages with theirs; is bad for the power balance between user and the admin.

That's a fair point, but as I've pointed out above, I think that the question of Identity is much broader and more nuanced than just owning a set of keys or nicknames; if you're curious I've written about it here: https://binaryigor.com/centralized-vs-decentralized-identity...