Why does it have to be absolute/binary?
If I can't have full, unfettered free speech, then it's the end of the world.
Let's put aside the slippery-slope arguments. The real world is messy, with ridiculously obscure corner cases that make blanket statements and policies practically impossible to operationalize without significant collateral damage.
Shouldn't a more realistic approach be something like "give me speech as free as is possible", with considerations that are negotiable, such as, "does this speech promote destroying the institutions on which the speech itself is based on", etc...
As an extension of the Spolky-ism that all non-trivial abstractions are leaky, all production systems have edge and corner cases that can't (or shouldn't) be contained within a blanket uniform policy.
Yeah, it's messy. But, as with many regulations written in blood, there are legitimate use cases where exceptions to blanket policies and statements are better to include than not include.