"But more importantly, it makes you stupid:"

I don't think it was your intent, but that reads out as a seriously uncalled for attack - you might want to work on your phrasing. Hacker News rules are pretty clear on civility being an important virtue.

I didn't target the author, and I used the terminology used in the article heading

I doubt it. It's not directed at an individual, and it's presented as a passive fact. It's a bit like saying "drugs make you stupid", which no-one would complain about.