I think Chuck is mostly disturbed by what he sees is his brother's continued shortcuts in life. Chuck likes to see himself as the ethical guy who always plays by the rules, while his brother is always taking shortcuts to get to where he is, and that bothers him. Kind of like how he can't stand how easy it is for Jimmy to get people to like him because of his natural charm, something Chuck runs short on, and that makes him jealous. I don't think he is an egotistical d-bag; I think he is someone who is letting his jealousy get the best of him.