There is a concerted effort by the establishment through PR campaigns by think tanks, bot networks, and major media outlet connections, to push the narrative that free speech is dangerous and should be curtailed. They are first starting with pressure and leverage on private outlets, while simultaneously floating the idea that there should be legal limitations on online speech. It's all part of the same effort.

Furthermore there are a few private outfits that have near a near monopoly on public speech, so they have the effect of censorship.