In this case, your impatience is a response to someone else not having respect for the dignity and worth of everyone else in the group (including you). And criticism, when aimed at improving someone’s knowledge or character, is showing respect for the dignity and worth of another person. It says “I believe you can be better than you are, and I respect you too much to allow you to continue being worse off than you could be when it is in my power to help.” Most people don’t appreciate this kind of respect. Arguing with people and criticizing their beliefs is frequently seen as an attack these days. But in fact, it is the act of a friend. An enemy would just leave someone to their ignorance and vice.