Because the censorship on old Twitter was so wildly effective, people can't even fathom it was happening, despite the extensive documentation.
Maybe you don't know about the Grok deepfake story because you don't see far outside your filter bubble: https://en.wikipedia.org/wiki/Grok_sexual_deepfake_scandal
It's just not government censorship.
I'm sure this would become extremely obvious to you if your political viewpoint suddenly started getting "moderated" off of every major platform.
It says a lot that the only "free speech" you care about is the hate speech that infringes on others civil rights and creates a chilling action on civil participation for minorities, yet you seem to not care one bit when Erdogan cracks down on opposition to his authoritarianism and Musk helps out, you welcome that government censorship.