Some years back there were some public comments from famous authors about the Susan in the Narnia books not being present for the Final Battle and what followed. It was framed as bigotry against women and people of average morals.
Neil Gaiman's came in the form of a short story, "The Problem of Susan," which from an excerpt I found is apparently quite vile.
Gaiman has fallen out of public favor as allegations against him have begun to surface.
Two other authors were J. K. Rowling, who ought to know better, and Phillip Pullman, who also writes vile stories, I've been told.
Pastor Douglas Wilson has a lucid, sensitive, and rather long rebuttal to the Problem of Susan; link below.
My own, lesser contribution here, is that C. S. Lewis was a fan of George MacDonald, and MacDonald wrote some vivid portrayals of spiritual devolution. In The Princess and Curdie, Curdie was given the ability to discern which beast a person's moral character was descending into by holding their hand. In Lilith, MacDonald reveals that the dull and brutish big ones/giants were immature persons who chose wrongly too many times. Their bodies grew larger while their selves grew smaller.
Susan being "no longer a friend of Narnia" is a succinct description of Susan not being anywhere near all that she should have been. It is not final, however; she is in spiritual peril, not perdition.
EDIT: That last sentence is not quite where I want it to be; Susan is lost, but not yet irredeemably so.
https://dougwils.com/books-and-culture/the-salvation-of-susan-pevensie.html
A boomer apologizes, albeit without much clarity.
"It is not meet to take the children's bread, and to cast it to dogs," Jesus said; Matthew 15:26.
I recently understood that I am spending my life in rebuilding spiritual and practical foundations that had been foolishly undermined by previous generations.
Several months ago I was reading a nonfiction book by Christian author Paul Tournier, and made it about three-quarters of the way through before being drawn away to other things.
When I picked it up this last week and finished reading it, I found references to about a dozen Bible passages that had come up in my daily Bible readings in the interim, mostly obscure Old Testament personages with a variety of afflictions; Tournier was a Swiss doctor famous for connecting his Christianity with his medical practice.
I also read a Christian fiction book this last week: Deadline, by Randy Alcorn. One day, what I read in the book mirrored my morning Bible reading on that same day.
"A work of creation was three-fold, an earthly trinity to match the heavenly; the Creative Idea, timeless and passionate, which is the image of the Father; the Creative Energy, begotten of the idea and working in time, which is the image of the Word; the Creative Power, the meaning of the work and its response in the individual soul, which is the image of the indwelling Spirit."
-- P. D. James, summarizing Dorothy L. Sayers' description
