I would say don't run a casino on cloudflare
Good to know. Please make an uncontroversial list of all the human activities that you think shouldn't be allowed on cloudflare (or perhaps in general). Then we can all agree to abide by it, and human conflict will end!
Cloudflare is a company, not a public utility. If they want to disallow any sites that make fun of cuttlefish they get to do that. If you want a CDN that follows the rules of a public utility I think you're out of luck on this planet.
In addition to this, if CFs say...payment provider, hated people making fun of cuttlefish, it might make sense for CF to ban marine molluscs maming there also.
I am also surprised that 4chan is using Cloudflare captcha and bot protection
What is surprising about that? Cloudflare also provides services to terrorists, CSAM websites and more.
Nice job painting CF as the had guy. They do NOT provide services to such, again and again they have terminated such for breach of TOS and cooperated with the legal system.