You're pointing out a problem there. The tools and processes around moderation (censorship might be too strong a word) are pretty lacking.
Let me consider with two cases.
For one the issue of a company making the rules, e.g. Facebook imposing prudery worldwide, even in places where things like a bare breast are not considered as such (yet?!). Why should someone half a world away physically and maybe even further morally have a say in what people can or cannot post in e.g. Europe?
Another is bans/ignores/mutes by users, I would say. The tools for these are absolutely lacking. Mutes or bans are usually permanent and there is no way to do anything about it. It's like solving every problem with a sledgehammer. (If I wanted to, I could go and mute or ban anyone I like to on e.g. Twitter and they would have absolutely no means to explain themselves, appeal the decision or have any expectation that their sentence is going to be over one day.)
Maybe social media should be rather treated like public infrastructure and should have to provide services too all while leaving any moderation problems to other entities (and should just have to execute their decisions instead of both deciding and executing).