I would say we are already pretty severely censored. We no longer have social tools to vet misinformation. We can't publicly insult dumb people and their wrong ideas to their faces. There are people -professional trolls- who, while they should not be deplatformed, should have their ideas publicly scrutinized and yes, humiliated. But we can't do that, because it's cyber bullying, or whatever.

Irl, if a crazy person gets on a soapbox and starts shouting at everybody, then people can shout back. Online, anybody who flamebaits is protected by the platforms and can censor the responses. They delete opposing comments, shadowban users, harsh language usually gets automatically deleted by the platform - and all that shouting-down is actually just counted as "engagement" which algorithmically boosts and spreads the bad idea further. The argument just directly profits the person with the bad idea, and incentivizes them to come up with even worse ideas to make everybody even madder.

This kind of censorship is causing a whole lot of problems right now.