I don't think you're wrong, but the fact is that however you define censorship, whatever the bar is you set, it exists here. I have observed even literal and credible death threats expressed on the platform in the past. I certainly self-censor in the attempt to reason with folks. Not exerting some degree of tact results in out of control ranting and makes actual useful discussion impossible. Some of my favorite posters are known for doing exactly this, even at me, from time to time.
That ~1M accounts that have been flagged off the platform is a glaringly obvious example that folks remaining here after have been more tactful, or spineless, and I probably exemplify this well, and have since I got here. I have had many conversations with whales in which I attempted to reason with them, ran up against immovable positions and simply desisted rather than exploding in remonstrative pejorations.
I have managed to become old due to similar cowardice IRL as well. Little more astounds me, TBQH. I was pretty sure I'd never get through puberty alive, and to have cracked 60 is utterly baffling.