Kind of interesting but some of these are what you might call "universal themes": the miraculous child, the hidden destiny (revealed during childhood or adolescence), the monster that brings yet conceals wonder, be it life giving or life destroying.

Science fiction, fantasy, and religious myth all draw on these. In the Unitarian church they try to elide Christmas by pointing out that every child is a miracle, which is kind of like saying all lives matter. It doesn’t mean anything. I know what it is to have an infant, that rush of love the intensity of which you have not experienced since your first adolescent crush. But there’s that and then there is The Miraculous Child. Two different things.

I’ve stayed far from the point oh well. Herbert’s novels are heavily philosophical. IIRC Dune Messiah is essentially a protracted conversation. If you prune away the crappy fanfic they are quite unlike the trite space opera that is Star Wars, which is why Star Wars movies always work. They’re fun. Dune movies always try too hard & end up pretentious, confusing and boring.