It's certainly bad to get angry - I mentioned that there. I should clarify the anger happens when it's repeated more than on a one-off. E.g. if you have the same sloppy signs for 6 months (where I can tell by reading the code that you didn't even try to run your code locally), then I'm not learning anything and I'm getting frustrated because you're clearly not taking feedback to heart.

I try to avoid letting this show, but it's frustrating.