I don't think the comment sounds unreasonable, and I don't find anything weird about the words in the comment itself. It just kinda bums me out that so many people must come here and comment and upvote comments without even reading or skimming the first few paragraphs of the article. This isn't news to me, of course; I've been a frequent HN reader for over a decade now. But it still bums me out.
I've read something more of the opposite before: posts with lots of comments risk being down weighted unless they've received a lot of upvotes. Supposedly something to do with wanting to avoid lower value content which is attracting a large amount of discussion anyways.
I've never heard of anything of this nature regarding comments though.
The reason it is top-rated is because it sounds extremely reasonable. This is enough for most people.
I am not judging on whether the comment is correct or not, just answering why it is top-rated. I find nothing weird about it.