.win and gab will absolutely censor people. I know people who have had their accounts banned. The wrong think there is just anything not right wing.

4chan is more an example of what happens when you don't censor.

What's wrong with 4chan (and dozens of its offspring)?

You don't like it - you don't read it. It's that simple.

It's fine that they exist, but they shouldn't be a model for the rest of the Internet.

Every town needs a gross back alley, but a town that consists only of gross back alleys is an awful town.

Everything you named still is far worse with how much they allow and how much bigotry, .1% worship, and far more authoritarian ideology than Twitter. By a wide margin.

Are you suggesting any of what you just named aren't really, really racist, sexist, and authoritarian?