Ech. I understand the general point OP is making but I don't mind admitting I see things differently. I am free to enter Joe's Cafe and do 99.9% of normal things one might do in any similar setting. But if I enter Joe's cafe and solicit my friends there that if they don't like the way Joe runs his cafe they should be aware of Lenny's Cafe, I feel that Joe has every right to stop me from doing that. To pedants: Yes, I know the analogy isn't perfect. But please don't pretent it isn't relevant.

This said, I remember when many MAGA friends announced they were leaving for Parler or MeWe or Gab and I never heard any of them claim their posts were removed (the ones who didn't leave right away).