Because of the fact that Lemmy is open source and designed to be federated, the freedom you’re looking for is meant to be found by running your own Lemmy server/instance.

With that kind of openness, it means everyone can have their own server and can run it however they want. It actually lessens any theoretical obligation dessalines’ might have to allow any activity at all on this instance. All admins are free to set any rules that they want; everyone gets their own space.

Nowadays our culture has reached a state where anyone who makes appeals to “freedom of speech” probably shouldn’t have it. Yes, speech should reasonably open, but there are always going to be some things you shouldn’t say or shouldn’t be allowed to say, so making philosophical appeals to something like “right to free speech” is basically the last resort of people who want to engage in bad speech.