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.
Suffice to say, there's a significant difference, and trying to conflate the two implies either innocent ignorance or deliberate dishonesty.
I'm going to assume it's the former, because I've always taken Napoleon's alleged aphorism to heart - the one about "never attribute to malice that which is adequately explained by ignorance".
Big Tech censors a bunch of stuff that there would have been zero legal risk in leaving up.