Also, I find the idea of classifying FB as left-leaning to be laughable.
Your list was pretty narrow in scope until this one. ToS could contain anything and be used to censor speech for any reason.
I’ve not heard any legitimate, evidence-backed claim that any of the major sites are enforcing their rules unfairly. Instead, the claims are usually along the lines of:
“I got banned for saying we should do violent stuff! And yet they allow this other ideologically opposite person to have an account!”
“Can you point to a specific post where the other person is saying we should be violent?”
“No, but everyone knows they support it!”
Well, “everyone knows” isn’t evidence.
Suppose it's a white family but they're wearing MAGA hats and the restaurant denies them service. That's nearly acceptable among a broad swath of the population today.
Now suppose it's your mom wearing a MAGA hat (you may not like that she wears one but it's her right, no?) and she gets denied service in a Starbucks. Maybe someone gets violent with her and knocks the hat off her head. Maybe the server spits in her coffee. All of which has happened. Are you still comfortable with "private property"?
Suppose you wander into a restaurant wearing a "Biden-Harris" T-shirt and they say "Get out!" Are you okay with that?
I could keep going, but you get the picture. We can't have a "freedom for me, not for thee" attitude. It has to be universal.
Also in practice, there is way bigger outcry over right wing reedits being banned then left wing reddits. Each time reddit banns a bunch of subs, there is discussion about right wings ones - including on HN. Nobody cares about left wing subs being banned, that discussion never appears.
For the record, I am fine with both left and right reddits being banned right now. But I have yet to see free speech advocates to fret about toxic leftist and feminist places being closed.
Big tech companies are largely left-leaning internally (which isn't surprising since California is the most left leaning state), so there is nothing to fear as long as you lean left yourself, (i.e. I guarantee you won't be censored for left-leaning speech any time soon).