This should not happen. Clients should at least respect user relays, and if they are good, they will support NIP-65. Without NIP-65, there will only be a few large relays that can censor users.

Honestly, what would be the great dream-like amazing UX for this in the legacy web platforms? The Zapstore website would have a random "comment with Facebook" embedded. And in the comments no one would know who is the app author responding to comments from other randos because the identities would ...