It’s not censorship unless the government itself is doing the censorship and making people face criminal consequences for disobeying.
If a private entity is doing it, even at the request of a government, it’s not censorship or a violation of free speech unless they were going to face legal consequences for ignoring the government’s request.
While the XKCD explains that your “United States 1st amendment rights” are not be violated by non-governmental censorship, it doesn’t change the fact it is censorship. Everyone is in favor of censorship (like Randall) so long as only things they disagree with are censored.