Is declining to participate by re-transmitting such speech even censorship? You can't force a company to take you as a customer, being a shit head isn't a protected class.
That's only a few providers and too expensive for anyone but someone using Google ads to fund their operations, because Cloudflare created that cost by its illegal actions.
Regardless of the behavior of the people at kiwifarms, I still find it odd that we have protected classes of people that are more equal than others. Everyone should receive the same rights.