Kuro is unpredictable. Town generally lynches people like that. I'm not so quick on the trigger, especially because Kuro had no obvious reason for beginning to crack; they weren't under any real pressure or scrutiny. So this only draws the attention of the town, and that is dangerous.

Fujio: Kuro didn't claim that they were responsible for the lynches. Just that they were magical. It was a separate "role claim". Don't conflate the two.