Personally, I find AI generated text disengaging. A also heard some professional writers immediately notice disorganized storytelling patterns. Have you found a way to fix this? Is there any soul in generated texts?
I will say that a skill is developing but it requires oversight and ... honestly, i should probably read the book before buying it on Amazon.
The soul comes less from the prose and more from the fact that this story exists for this child. A book about their specific fear, their favorite thing, their family situation — that's what makes a kid ask to read it again at bedtime.