More seriously though, in many ways HN is a pretty broad church. You're always going to get a spectrum of opinions, and some portion of people are always going to be particularly forceful about putting forth their opinion. Maybe it's a bad day, maybe it's habit, varies from person to person and day to day, etc.
But I think, if you're posting something to HN (or, really, any large internet forum), negative feedback - and dismissive feedback - is something you need to be prepared for as part and parcel of the experience because it often is going to happen.
Not that I agree with the person you're responding to - their remark struck me as quite a mean-spirited and unnecessary comment, and I very much prefer your perspective.
Anyway, I've bookmarked the site so make of that what you will.