> At most the distinction the article seems to be making is that moderation should be optional and censorship forced
I don't think this is the correct distinction he is making. He defines moderation as a receiver being able to choose whether they want to see certain content. He defines censorship as a third-party deciding if a receiver can see certain content whether or not they want it. McCarthyism would be censorship under that definition.
The aspect i was thinking of was how many artists were blacklisted, but still able to publish in less reputable places like playboy. You could say they were just blocked from high society but anyone interested was still able to read them.
I don't think this is the correct distinction he is making. He defines moderation as a receiver being able to choose whether they want to see certain content. He defines censorship as a third-party deciding if a receiver can see certain content whether or not they want it. McCarthyism would be censorship under that definition.