HN is pretty free-speech-maximalist, especially on a Saturday morning. The argument you're trying to use isn't really going to work here at this time. You might try changing your rhetoric and see if that help you out more.
If you insulted somebody with slurs, the HN community would flag you pretty quickly regardless of what day it is. I think a lot of people (some of whom are in the comments section here) purposefully pretend that there is no difference between that kind of moderation and things that more reasonably qualify as "censorship". They essentially want an excuse to express their negative emotions at other people, and look to the lofty ideals of "free speech" as a pretense to attack the mechanisms that prevent them from doing that.