#FediblockWithProof - an issue many people have with the present tag is the vague lists, and wild baseless accusations. This is the tag for when you've brought actual proof to the table beyond #TrustMeBro.

While literally nobody owns or has authority over a hashtag, my advice when dealing with people who misuse this one is to silently block/mute. Don't call out, don't confront. Just block and move on with your life.