I ran the worlds largest DDoS-for-Hire empire and Cloudflare helped
The deplatforming logic is practical but pretty shaky as a long term strategy. Kiwifarms absolutely may have been a despicable place causing real harm to people. In that case, the police should initiate a request to take them down that Cloudflare or ISPs etc. are obligated to follow. The problem is the government is completely ineffective and regularly offloads their responsibility to platforms like Facebook, Cloudflare etc. A private company should not be making decisions on essentially freedom of speech. Its just one more responsibility that law enforcement has completely shirked leaving others to clean up the mess.