Earlier quoted context omitted.
Privatized censorship is legal in the US, but it is still censorship. For example, the MPAA was formed because the movie industry felt it was better to self-censor than to have the government censor them. If your movie contains anything the censors don’t approve, then it will not get an R rating, and will not be distributed to theaters, etc. They even censor political speech sometimes: https://boingboing.net/2007/12/…
OK. By the same token, demanding that all speech be allowed on a private platform is censoring the platform owner's speech. So whichever position you take, you are advocating for censorship, and we have successfully reduced a useful word to an insult we can shout at anyone who uses their speech in a way we dislike. Neat trick.
-Demanding the owner not let someone say something Vs. -Demanding the owner let someone say something
I mean, they're both demands vis-a-vis the owner. But what they're demanding are the opposite of each other.