If anything I think HN has the opposite problem. Authoritative-sounding rebuttals to the submission tend to collect more upvotes than the quality of the rebutta

If anything I think HN has the opposite problem. Authoritative-sounding rebuttals to the submission tend to collect more upvotes than the quality of the rebuttal deserves. The key is to maintain a disinterested tone and write enough words that people just assume you must know what you're talking about.