The Ol Sybil attack. Let's see how Nostr handles it. A censorship dilemma is created.

I haven't saw the guy in days. Muted a couple though on day 1.

I add the word ReplyGuy at security filter, occult word, then save. It help me a lot. Try it.

Report it as spam, when you see it. Or put "wss://" as filter to your blocklist.

Relay admins working on banning it directly on the relays through enforcing stronger authentication or implementing PoW (Proof-of-work) or a WoT (Web of trust)