Never mind, I'm stupid, they're all Fedi people who tried Nostr 7 months ago and left.
Discussion
Still several false positives, though. Maybe you should remove the button that unfollows them all until it works better.
nostr:npub1lgys0sr2u5qc2ugl8y75xtsv328n25gwsqjlz8vs9zd9033nqeyqpyyddg was a false positive, but it's fixed now. Who else?
yes i got false positives too accounts that just posted a note as recent as an hour ago