The phrase "to be green" implies that a person is young or inexperienced. This is a reference to fruits, which tend to be green before they are fully mature. Therefore, if George was preocuppied with a desire not to appear green, this most likely means that he did not want to appear too young. He is most likely insecure about his age, and wants to convey an attitude that makes him appear more mature.
Society has different viewpoints because the society most likely has never seen something or something about someone before and they are going to think differently about them
