His excellent point: if we let kids submit work anonymously, and graded it accordingly, the kids would feel that the feedback was more accurate. But more importantly....they would be greater risk-takers with their work. They would know that feedback is honest and unbiased.
Additionally, he shared the story of a girl who was writing extremely popular fanfiction stories of 20,000 or more words, but was failing her English class. The girl was making a choice between 'write for the teacher' or 'write for the world'. But that's material for a different post.