I love it when people try to impose what they think is the right thing to do on others instead of just doing what they do and let other people do what they do. Otherwise known as "I'm think I'm better than you so you should act like I do"
I have my own set of "rules" as to what constitutes a tip. My rules aren't your rules and your rules aren't my rules. The sooner we can just accept people the way we are and all agree that the real scumbags are in Congress the better.