Things go too far in one direction, and the speech restrictions in the former Eastern Bloc were considered unacceptable for more than 20 years after its collapse.
Now some people are trying to reestablish the same control mechanisms.
P.S.: No one is asking to permit the slur you cited to make a point, it isn't a great example.
The linked Google doc is not reasonable, it sounds reasonable because it is a one-sided depiction of the situation that is a) wordy b) completely omits the other side and c) is written in a style that resonates with CoC enforcers.
IOW, the most ruthless and stylistically talented person wins.
Here is the conversation that triggered the tribunal:
Now some people are trying to reestablish the same control mechanisms.
P.S.: No one is asking to permit the slur you cited to make a point, it isn't a great example.