I care about people who use the app and then respond with feedback based on actual usage. People who just say "shame on you" without knowing what they are talking about aren't helpful.
What you did instead was insult them back and now you can be sure they will not have anything nice to say about your company. To do it on a place like Hacker News is quite shortsighted since you never know who you're talking to or who is reading your posts.
Erm, shouldn't this go both ways? Like, isn't this equally applicable to posting snarky, uninformed comments in the first place? :)
Therefore, the most useful advice is that given to someone with something to lose. Whoever was "wrong first" is irrelevant to the outcome desired by curiousoffice.
Agree with your general point.