Turns out that logging into zapstore is somehow hard, probably I just make something wrong.
Anyways I thought that if reputations are public then state can create graphs of who knows who and/or connect with it time(?) so they would know when we met.
I think that most people go with default options so in default app uses Semaphone Protocol with ZK-SNARK (AIs idea).
That proof takes 3-5s so I don't think that it's so unconvinient to make it public by default.
https://nostr-live-reputation.shakespeare.wtf/
Next thing logging into zapstore -.-