Censorship is not something only governments can do.
I think we’re well beyond the point it’s time to have a national conversation about how these private companies exist as the public commons nowadays. They make these entirely capricious and disgustingly transparent swings between “Place for open discussion and free speech” (actually the founders exact words in many an interview in Reddit’s case) when the owners want attention and hype and warm fuzzies from the user base, “private company” when it suits their needs or they’re challenged on their principles.