Almost everyone's support of freedom of speech and any freedom is conditional and self serving, that's just human nature. Why are you going out of your way to only complain about the "illiberal left?"
Because 1) conservatives rarely bother to speak up on HN; they know they are quite unwelcome here and 2) the illiberal left claims to be allied with liberals and that's clearly false.
Conservatives speak up all the time on HN, and weirdly enough they sound exactly like you do, down to the inability to refer to the left without a pejorative.
Conservatives ignorantly tend to refer to everything to the left of them as "liberals" even to behavior that is quite illiberal, so the distinction is important. But you're welcome to believe whatever you wish; it's a free country.
> as "liberals" even to behavior that is quite illiberal
That's actually the label the left has taken on themselves, blaming conservatives for it is really weird. Yes, the behavior of the modern left has little to do with the classical liberalism, but it's not the conservatives' fault that the left took on themselves this mantle and then failed to live up to it.