Basically he only wants people who agree with him to read and respond to his content.
That said, I know nothing about this person.
EDIT: I don't even agree with his political viewpoints; in fact I'm close to polar opposite. But I get it.
I can assure you the number of people you should ignore is way higher than that.
I suspect it wasn't that though. When someone clicks on an HN link to an article, and chooses to leave a comment on the article rather than discuss it on HN (or as well as) they're probably not posting a nuanced and we'll reasoned point. They're likely just firing some sort of flamebait rubbish rather than participating in a discussion. If that happened every time your site was linked from HN you'd get tired of it very quickly and start to think HN is full of man-children and brogrammers.
The signal to noise ratio of the world is awful.
That's why in real life we have a carefully curated set of friends (even people who contradict us!).
> Hackers News: A DDos by finance obsessed man-children and brogrammers.
Accurate description of a significant portion of this site's userbase.
> If you click through to JWZ from HN, you will see an NSFW picture with the following text underneath:
Maybe something to do with reading comprehension.