No matter the protocol and no matter the app, you will be censored at the end by users themselves. Whoever speaks bullshit is simply blocked / muted. He is free to talk his mind, but others are free not to listen to his ramblings. So self control always was and always will be a thing. In person, on line, in centralized networks, in decentralized networks. If goal of speaker is to have large audience, than self control is, and will be important no matter what.

Only networks in which people can not filter out users would allow everyone to speak their mind, but those networks would not be used by an average user because people want to have control of data that gets to them. For example, that's reason i don't watch TV anymore.