Which in itself would summon the vitriol of the super-trolls. "Moderation is censorship" is the most absolutely ridiculous mantra to gain traction in the last decade.
People often conflate the two. That censorship and First Amendment violations are one and the same. They are not.
And the reason the U.S. government saw fit to restrict its ability to censor its public is because they recognized that that ability could be used to censor legitimate criticism of the government.
Dang rate limited my HN account because I got into too many controversial discussions. Arguments just like this one. Did I call him out for censorship? No. I asked him to keep it rate limited. Because the truth is sometimes I see things and I just have to reply.
The word 'censorship' is clearly defined to include actions by many groups, not just governmental entities.
Now, I think there is a line between moderation and censorship but it is not based on who is doing it. That line is can get real fuzzy, but in my opinion (and it mirrors some supreme court decisions) the most significant difference is in what they try to control. Moderation tries to regulate how people communicate and censorship tries to control which ideas get expressed. Almost all moderation also includes some amount of censorship.