I get that it is a kind of contradiction to claim being about free-speech, but to see their point, when free=speech and they as the primary advocates for free-speech are under clear and direct and persistent and unrelenting assault of their speech and thought, I can see how they would take on practical positions to protect their community from infiltrators and subversives as they are struggling to survive under relentless abuse of power.
What you should realize, and this is a general fact, is that when any group is withering under constant barrage and assault by what is really objectively an evil agenda of oppression (freedom of expression is in fact a human right under the Universal Declaration of Human Rights), regardless of what you believe or say, they do not have the luxury of high moral consistency while facing free-speech eradication by an evil regime hell bent on controlling all aspects of humanity.
And kid yourself not, what the tech companies are doing to suppress free speech is not only purely and objectively evil, it is a threat to the US Constitution, which is the lynchpin and capstone for freedom and liberties all over the world too. If the American Constitution/values of free speech falter as they seem to be, I pity all the poor souls around the world who have lived under an umbrella of the US Constitution who will suffer immensely more and in deafening silence of globe dominating regime censorship.
There will be no people to take up the cause, e.g., of the Uighurs if the US regime wants to make nice with the Chinese regime for whatever reason. There will be no reporting of atrocities or even knowledge of the lies that justified the illegal and immoral invasion of Iraq and the killing of hundreds of thousands of Iraqis defending their hime against an evil invasion. There will be what the party wants … ney, demands you believe. Please see the book 1984 for reference. Many say they have read it, I seriously wonder if that is true.