If this upsets you, then you probably shouldn't use the "it's a private company" defense when people are upset by other instances of Big Tech being guilty of censorship.
I'm not sure you understand the difference between "Big Tech company using censorship to prevent their underpaid and overworked employees taking collective action" and "Big Tech company using censorship to avoid legal liability after yet another dumb fuck who hung out on their platform with like minded dumb fucks decides to shoot up a mosque/school/night club/music festival, and live streams it on Big Tech's platform…
Big Tech censors a bunch of stuff that there would have been zero legal risk in leaving up.