But-- we should have big markets of many participants who all make their own decisions about what they condone. Then, the individual decisions are not so toxic. And if you are doing something egregious where almost all of them say no, well, you got what you deserved.
My personal thoughts: exposing peoples' personal information for the explicit purpose of severe and illegal harassment is on the "definitely not OK" side of things. Ordinary hate speech that occasionally leads to spree violence is much murkier.
If Property X is something like the color of their skin, their sexuality, their gender, etc, then I would support cloudflare banning them.
I am certainly not the master of what should and should not be on the internet, and neither should cloudflare. As a society, though, there are some things that most can agree on.