I see where you are coming from, Luc, but I still have to disagree. I can understand if you don't want to help or respond to a poster because they didn't include all of the information you feel you need to be helpful, but slamming them isn't really cool either.
Steve could have simply asked for more information without the slamming tone or if he had simply moved on and ignored the post altogether.
As you said, most people aren't going to read every existing post on a message board before posting their question, especially if they are new and worried because their first batch isn't behaving as expected. I know I won't... I can't. I can do a few searches, but if they come up empty I'm going to post a question. I'd love to devote that much time to my hobby, but I have a job, family, and other responsibilities that dictate that I can't spend my days reading old posts. I already spend a lot of time keeping up with the new posts. I'd spend years just reading message boards with no time to actually try making wine if I tried to read all of the historical threads. LOL