Maybe he just is a human being. People seem to feel entitled to godlike father figures as bosses now, who pamper them all the way in their comfy 9 to 5 jobs?
Not saying you should scream at your employees, but humans can get angry and in general are not perfect. If it is too much for you, quit.
I wonder how far Steve Jobs would have come if he only stared out today? I've heard he also made people cry.