It's a good comment because it summarizes the article better than the title does. Every article with a misleading title should have a top comment like that.
I think that’s shallow dismissal as in disagreement without substance, I.e. not adding much to an argument. Not dismissal as in a brief summary so you don’t need to read the rest.
> Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something.
https://news.ycombinator.com/newsguidelines.html