Swatting people is illegal, if you have evidence of a crime you should bring it to the police, not to cloudflare.
If that doesn't work make the part you don't like illegal. Enshrine something like the "right to be forgotten" stuff into law and make them take down threads if the people they refer to don't want them up.
I know it's hard to word something like a "right to be forgotten" without making it to broad and a tool for abuse of chilling speech but it seems worth the effort if the consequences are this dire.
If you would stop derailing the conversation with unfeasible solutions.