People who give the Hunt Trolls what they want.
There are early pullers who will engage that S-Rank the second they arrive, but they're not doing it because they don't like waiting. They want to hear angry shouts about early pulling. They desperately want to receive angry tells. As bad as the trolls are, watching dozens of people fall for the same act every time is even worse.
When the trolls are doing their thing, just be quiet. By all means, tag the S-Rank once and then back off so people have a chance to arrive. That's being helpful. Boot the troll from your group or leave their group and join another. That's great. But please... Just be quiet. Everyone knows. Everyone is annoyed. Almost everyone has the discipline to be quiet so the Troll doesn't get the attention they want so desperately. Don't be one of the ten or so people who keep the Troll coming back for more.