"Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."
But I do think this kind of low value and lazy opionionating should be discouraged.
There's a pretty decent size thread of interesting discussion beneath it, demonstrating that it is of value.
> I don't understand why this comment was singled out
I don't moderate this site, but if I did I might be tempted to use a script to scrape for keywords and phrases that sound like violations of the guidelines and issue replies at a key press or automatically. And that's a good way to do it, except occasionally it causes... well... a shallow dismissal?
"Decent size" does not indicate value on HN. We want quality, not quantity. The responses that the root comment generated were mostly either generic (e.g. https://news.ycombinator.com/item?id=28995221) or outright flamewar crap.