While I agree that it's better not to be rude to people, I think it's common for intelligent people to become impatient when forced to share their understanding

While I agree that it's better not to be rude to people, I think it's common for intelligent people to become impatient when forced to share their understanding in what is to them excruciating detail. It is correct to overcome this frustration, but it's also important to acknowledge its existence and accept it as understandable, if only in order to overcome it.