I don't see how important we view websites like Twitter or Facebook or how much they may mean to certain people means they somehow owe fairness. If you don't like their posting rules don't support them. I don't support them and I am able to maintain my social contacts.
As a private company I wouldn't think they even have to publish rules for posting, it would be nice and helpful and make their platform more useful, but required? I don't feel like that's true.
I can't stand federal government getting in my business. Any business other than defense of nation and interstate issues.
If we don't like the social platforms around today then in the future there will be new ones for us, better ones. That's how free market economies work.
IMO