Sounds like something for the courts to handle and not cloudflare.

https://casetext.com/case/scott-v-moon-1

You could say that about a lot of things that are normally covered by abuse policies. For example, we expect hosts to remove content that violate copyright, why is copyright more worthy of protection at the corporate level than defamation?

The DMCA specifically requires hosts to remove content upon an allegation of copyright infringement. There is no law requiring hosts to remove defamatory content (without a specific court order). Congress has deemed copyright protection more worthy of protection at the corporate level than defamation. If you are unhappy with that situation then you should contact your members of Congress.

Because society created laws in that way?

Interesting. I typed up a comment that mentioned the name of the person co-ordonating the DDoS campaign, and I got instantly flagged. Test.

If KF are guilty of defamation or other crimes, go after them in court. Don't try to bully cloudflare into acting as executioner of your demands.