To be honest most of the time appeals to "free speech" are just about saying nigger or something.
It's not commonly about defending constructive, well-worded yet controversial or heterodox takes, but that falls under the umbrella too of course. It's just that it's usually wanting to be able to say a slur and not get banned off social media. That IS kinda cringe. You're muddying the waters by acting like saying nigger is super important or high priority or something.
You didn't get banned because you wrote a multi-tweet essay about IQ differences between races being biological, you got banned because you said nigger. Lol.