Your ideas about freedom of speech are not Catholic. They can probably be traced to the so-called "Enlightenment" which, rather than being a good thing, was essentially an anti-Catholic movement.
In my process of having my mind formed to become more Catholic, I had to let go of the "Enlightenment" values that are indoctrinated in Western society and replace them with traditional Catholic thinking. There is nothing in Catholicism that suggests that free speech ought to be protected or has any value whatsoever. In Catholic thinking, only speech that is true and good deserves protection.
I mentioned earlier, 54 years of enlightenment have convinced me of the unrenounceable advantages of freedom of speach over censorship.
I also mentioned earlier that I recognize both the benefits of creating a "safe space" and the right of the owner of this platform to regulate it as he desires.
So, on free speach, in general, I think that we will have to agree to disagree, even if doctors of the Church and Popes recommend and teach against free speach.