He wrote Transmigration of Timothy Archer because Ursula LeGuin took him to task about this
If you have any links or book recommendations to share on that history, I for one would love to know them.
I find the history of the interactions of SF authors strangely compelling -- e.g. the book "Hell's Cartographers" is a personal favourite, and it's just a set of autobiographical essays from NY 40s-70s SF authors talking about their time in the scene.