Jerk might be a strong word, I think he/she might have been trying to help, but it comes across a bit terse.
It's true, I felt it was a bit of a strong word even when posting it. But naked imperatives ("Fix it before you launch") come across as aggressive in casual English nowadays.
sorry for the tight tone. I was clicking on the link on the first load and the images are all broken. It worked after several refreshes. Thanks for heads up!