@backdraft - I have also worked in a lot of restaurants and I've noticed the same thing. But I remember seeing one health inspector once that was like an army drill instructor. He looked over the restaurant with a fine tooth comb and when my manager objected to some of his grades the inspector completely chewed him out. Everyone had their jaw on the floor. This guy was so intense!
So I guess they are not all burned out. This guy went about his job like he was saving the world. There is one in every bunch.