NOSTR is open data PROTOCOL

hence anyone with sufficient tech-knowledge/tool can analyze which npub replied which npub note or DM or channel. OPEN BOOK sort of- this grows as digital track over time. hence you should not use nostr even non-kyc if you think that's an hazard/privacy issue. this openness n transparency itself acts as deterrent for any criminal or illegal purpose of use since anyone can dig the data. location tracing is OPTIONAL with app like wherestr, browser , phone option level also. many famous personality n celebrities already upload the home, office, vacation pic so they really NOT care about it. when u shop in amazon, browse anon ytube or any internet clearnet site they collect ur origin IP by default - only difference many relay/app admins collects it here instead one giant bigtech. recent DM graphing is nothing of big deal.  cc nostr:npub18ams6ewn5aj2n3wt2qawzglx9mr4nzksxhvrdc4gzrecw7n5tvjqctp424