Tolerance is accepting that another person has a different view. But the people who are pushing lies about the Holocaust or a flat earth don’t have a different opinion, they are lying about well-known, verifiable facts. Now, some may say that censors often hide behind “facts” to suppress ideas they don’t like. The difference is that the Holocaust was a global tragedy and the earth is round and other “points of view” are both harmful and nonsense.
Censorship is a dangerous tool but not a tool which ought never be used.
The essential problem is _how_ these curation decisions get made. At present, Facebook is making free speech decisions much like a government, despite not having representation from “the people.” While Zuck may be a benevolent ruler, his successor may not be. We need government-like separation of powers and popular representation in order to maintain social platforms for many generations. Otherwise, we risk digital despotism.