Is this type of comments really in the spirit of HN discussions? From HN guidelines:

> Please don't complain about tangential annoyances—e.g. article or website formats, name collisions, or back-button breakage.

I find this type of comments in many articles which goes like "I thought this article would be X but turned out to be Y". Sure you thought that! Sometimes the title does not tell the full story to everyone. Sometimes it does. It would be nice if it always did. But there is ambiguity in natural languages.