I think you're being a little protective here. How much time do you expect the average user is going to give you? I can promise you it's not 10 minutes. You're being somewhat childish, IMO, by not recognizing that this guy took 10 frigging minutes out of his time to check out your site. Thank him, take note of the feedback, and move on. You will get feedback all the time from people you don't agree with but that's not a reason to be so quick to act this way. I hardly think a 10 minute website look is a "snap judgement".
First, there is and was on launch both One Republic and Adele on the site. And all of their songs are tagged correctly. Also he commented within 10 minutes of me posting it so including time see the post, listen to songs, and write the comment was certainly almost none especially considering this HN which is a place that has rules for quality of comments and good discussion.
I judged his feedback unnecessary and negative, not anything personal, which is more to say than what you did. I've read that post and thats talking about someone judging 300 sites not one.