Even though clients don't collect data on nostr more than average of user meta data is available publicly. And I don't think new usrs are fully aware of that. One day large scale datamining will for sure go for nostr as well, but with no central blame to aim.

Also that's kind of part of
the cost of public notes.

Partly thinking of what nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg was posting the other day, of his DM social graph.