In light of what happened recently, people have campaigned on Twitter to deplatform Kiwi Farms, most particularly by contacting Cloudflare and Dreamhost to hopefully get rid of it. That, however, is a waste of time.
Is it possible to deplatform Kiwi Farms?
When Cloudflare dropped support for Gab.ai, an extremely right-wing Mastodon instance, they instead registered at BitMitigate for DDoS protection.
When Dreamhost dropped support for The Daily Stormer, a Neo-Nazi news site, they instead went for another web hosting provider to keep them afloat. Keep in mind that before even joining Dreamhost, they were on Godaddy which did not want to host them either.
That is just to say that there is a hole for every bird – if you successfully get a hosting provider to suspend an account, then the person behind that account can just go elsewhere until they find someone who are willing to keep them.
There are even web hosting services that completely dismiss DMCA takedown requests, so pirates specifically register there to ensure they never lose anything due to copyright. Pedophiles register to services that have no rules against child pornography, so the web host will never have issues hosting their content.