I didn't notice that comment. It's bad because it's a shallow dismissal, but yours were worse because you called names and conducted yourself flamewar-style, and you did it repeatedly in the thread.
I don't think it's hypocritical, for a couple reasons: (1) it's impossible for us to read all the comments, and (2) one bad comment doesn't justify another.
HN is not a good place to "call that person out"—that just causes threads to degenerate nastily. On HN, an appropriate way to respond to such a comment might be to remind the commenter that unsubstantive dismissals aren't helpful, and then point out some relevant good things about the article.
