The purpose that this article suggests is that crating a positive caring relationship is the most important goal. We don't get to choose what others feel, that is their reality and not for us to disagree with or judge. We get to choose how we will respond. Will it be with empathy and compassion or with defensiveness and/or counter attack?
A wonderful book that teaches more of these beautiful communication/relationship skills is Nonviolent Communication: A Language of Life (also known as compassionate communication) by Marshall Rosenberg. I highly recommend it to all who are interested in communicating with honesty and listening with empathy (both with others and with yourself).