You seem to be confused and think that censorship has to come from government or some other orgs? You’re suppressing political topics (e.g. all of migration policy is racist by definition), which lands squarely in the censorship camp. It’s not any less censorship if your users agree with it.

You seem to be confused and think that free speech means everyone has to listen to your speech, otherwise it is censorship. Before the internet and connectivity, people were perfectly free to stand on a soapbox and say their speech, just as everyone around them as free to ignore them, ostracize them or throw rocks at them. Censorship requires things to be surpressed or prohibited but I alone on my mastodon instance cannot prohibit or surpress these things on my own. I can ban them on my instance but people can go elsewhere, so the speech is neither prohibited nor surpressed, just not welcome in this place.

Censorship largely, IMO, can only be done by the government or large corporations like Facebook. It is censorship when speech is forbidden that has no other place to go.

On the other hand, racism and hatespeech should be censored, they're not welcome and this "sunlight is the best desinfectant" bs people like to repeat like it's a bible quote doesn't help.