"But Dave, why don't they moderate?" They do. The harassers spin up new instances to get around block lists. "But Dave, why don't they show the receipts (screenshots to prove it's happening)?" The brave ones do, when they have the energy. It invites a huge amount more harassment, so showing receipts *always* causes psychological damage. Some folks are willing to tank that damage to get the word out. Most people understandably just want it to stop.