I shouldn't have to prove Pubky in order to criticize Nostr, right?
Anyway, Pubky is in beta, but all of it is open source.
You can learn about it in various ways, in various places, including:
There are also presentations and interviews from me and my team in YouTube.
Or, you could ask for an invite to the beta app, and view the #pubky-faq tag.
The worst thing you could do is stay ignorant and assume I'm crazy just because I don't say good things about nostr.