I used to see this on Reddit, I’m disappointed this behaviour is also on Lemmy.

Users collecting mod status on multiple communities, and then using that power to mass-ban a single user from a bunch of communities.

Modlog show how incredibly trigger happy some mods can be. Minor transgressions, deserving to have their comment removed at least, but then banned from unrelated communities as a consequence. This will only get worse as users become supermods.

Edit: It seems this is how an instance ban is reported, by banning from any communities the user has participated in. Then perhaps it isn’t all as bad as it seems.