The problem with your comment is that it begs for a response in kind. The tone on the thread changes, from tendentious to outright hostile. Users click into threads and see high-ranked comments with that tone. They write their own comments like that. Oh, look. Now we're Reddit.
I think he used just the right amount of vitriol to best make his point. He's adding something valuable to the discussion and that's all that really matters to me. It's not tone that leads to Reddit, it's too many posters with too little to say.