No matter how egregious a comment, it's never appropriate to respond uncivilly like this on HN. On contentious topics in particular, it's even more important to practice restraint. If this isn't something you're willing to do, please just don't comment.
I honestly am sorry that I see that as my last resort when cornered. I don't want people to get hurt, but most importantly I don't want to get hurt over some unwritten honor code that gets you killed.