So by parity of reasoning, companies that pollute within the bounds of the EPA's restrictions are also perfectly within their legal rights, and so shouldn't be chastised or further regulated, right?
Of course that's nonsense, because we're all interested in a better civilization, which occasionally means reviewing and accounting for the negative externalities of which we might have been previously unaware.
So please stop using this point against people raising concerns over how corporations are acting. There are legitimate concerns over the negative externalities of policing speech and banning people on private platforms with no recourse for appeal.