No, moderation isn't censorship. Community moderation tools allow the users of the community to have control over what content their community sees. It gives them personal control over their feed and their attention. At the same time, the person that's being moderated can still say whatever they want and create whatever they want. Free speech doesn't mean the world has to see your content and read it, it means that the world can see your content and can read it if they want to. My front door is kind of a moderator. It keeps unwanted people out. If I allow you in, you can come in. And if you want to stand outside on the street and preach about why you think cats are superior to dogs, you can do so all night long, I just don't let you inside my house to do it. You win. You get to preach. I win. I don't have to hear it. Moderation works the same way. Censorship would be the cops arresting you in the street for speaking or a client banning you for posting.