nip-5 is great to gauge client popularity aka is this problematic? Further down the list I see more clients that I'm not sure if they are in stealth mode or what ...
Discussion
Same as for images and also posted links. Most of my Nostr repos show clients as referrers.
The HTTP referrer header is stupid. Unsure why it doesn’t get more hate other than compatibility concerns.
Web Clients should likely use referrerpolicy="no-referrer" and rel="noreferrer".