Whether the content was strictly illegal or quickly taken down is irrelevant. It isn’t a good sign that supporters of Kiwi Farms repeatedly conflate the law with ethics.

Regardless of the law, Kiwi Farms is a place where a significant portion of the content, even when not veering into illegality, is based on harassment. There’s a history. Given the history and recent threats on people’s physical well being, Cloudflare decided they had enough. The same concept of freedom of speech that allows Kiwi Farms to exist is also what allows Cloudflare to decide to not do business with them.