I can only speak for myself but when I say "private company can do whatever it wants", it's because they have been doing whatever they want for years - to the complete apathy of the general public. Every time platforms banned and/or censored sexual content and sex workers, even going as far as marking innocuous words like "lesbian" as porn to be filtered (I will never forget Tumblr doing this) - how many people "showed up"?

I understand that the media coverage of Parler's ban in particular was huge and that's why so many people suddenly give a damn, but it's honestly more than a little frustrating to see people talk and act as though it's the first thing that's ever been cracked down on for moral reasons.