It's a putdown to snarkily sneer at others in the community, which is why the site guidelines specifically ask you not to: https://news.ycombinator.com/newsguidelines.html.

I understand the temptation to do this—we all feel it. That's why that guideline is in there. Such comments reliably lead to lower-quality threads, because they don't add anything that anyone can learn from. They just assert the commenter as somehow different from / better than others.

That's not to say the comments you were criticizing aren't bad. Of course, shallow dismissals are bad. But it only makes things worse to respond with a different sort of shallow dismissal.