I upvoted EY's comment, but very much agree with your comment. I am still plugging through the sequences and appreciate the, "This was answered, dummy." response, but I prefer, "This was answered over here, dummy."

In terms of actually increasing rationality in other people, getting short with them is probably counter-productive. But I get the frustration of dealing with noobs like me. I prefer the harshness because the feedback is clearer but I imagine that not everyone is like me.