ah, someone who shares my disdain for "hacker" "news"
It might be worth pointing out that you are dismissing a comment discussing a page that is (likely) making a criticism of the HN rules by implying - without good reason - that it is instead a criticism of the community, and not a critique of the site rules and the kinds of content it promotes.
Unless you're only meaning the "don't sneer" part - which is difficult to police among intellectuals, and if it's only policed at HN-directed criticism, is probably bad form.
In short: "Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."
Besides, I found it's better when I don't take HN too seriously; I now often enjoy HN the way I "enjoy" Curb Your Enthusiasm
1. Often as a top comment too! A lot of inaccurate, stripped-of-nuance or outright ignorant hot takes get voted up if they confirm the biases of the majority of HN users.
Though I generally would not catch nonsense about an 40-year old Microprocessor or some newfangled K8s setup.
So perhaps I should phrase the claim differently. The "quality" of nonsense on HN is remarkably better than other social sites.