We are attaching a Nostr identity to an on-chain address. It doesn't matter if it is reusing an address or creating a new one every time (which will also be attached in a Nostr zap event - and thus de-annonimizing it). Anonymity is gone for anyone touching any of those Nostr addresses and all of t...

Monero addresses cannot be re-used. Bitcoin hinges on the user knowing what they do, which they dont.

Good idea to use always new address Everytime . It’s more privacy.

Sure. That is why XMR obfuscates addresses in transactions. 😉