Spam can work the same way — that's how our email spam filters work. To use the OP's "censorship vs moderation" dichotomy, the current "censorship" regime would be like if your email filter marked an email as spam, and not only did not give you the option to disagree with the filter (i.e. mark as "Not Spam"), but didn't even give you the option to see the offending message to begin with.
Spam may still leak into our inboxes today, but the level of user control over email spam is generally a stable equilibrium, the level of outrage around spam filters — and to be clear, there are arguments to be made that spam filters are increasingly biased — is much MUCH lower than that around platform "censorship".
Spam may still leak into our inboxes today, but the level of user control over email spam is generally a stable equilibrium, the level of outrage around spam filters — and to be clear, there are arguments to be made that spam filters are increasingly biased — is much MUCH lower than that around platform "censorship".