That's a weak snipe against someone who's only enforcing posted guidelines, and in doing so gives us this great outlet to have discussion about topics like these.
I dunno, but honestly so far, HN seems to be much more free speech and free debate-focused than any other social platform I've seen. Not sure where you got this from.
(I have showdead on and 99% of what is deleted is just outright malicious or flame-y.)
(just like Hacker News where the comments posted must align with dang's views, he's also known as "the algorithm").