This breaks the Show HN guidelines (https://news.ycombinator.com/showhn.html) as well as the HN guidelines (https://news.ycombinator.com/newsguidelines.html), which ask you not to post shallow dismissals, especially of others' work. That's particularly important in Show HN threads. We don't want a culture where the reflex is to be a jerk and kick things.

That doesn't mean you can't raise concerns. Someone else raised the same concern that you did in a fine way: https://news.ycombinator.com/item?id=18348005. When in doubt, emulate them and ask a simple question.