Each note appears to originate from the same person but carries a fresh new npub. Wackamole doesn't quite capture how pointless muting & reporting is.

I suspect that the only way to remove this spam is to restrict notes from npubs that have put in zero PoW. A white list approach over the black list approach that we've been using.

This would represent a significant change to the nostr experience, particularly for new users. I don't expect it to be fixed within a week. Trade offs are definitely required.