Not a very deep justification. Probably the easiest thing to grasp for when thinking "how can I make this religious theme fit the narrative?".
It seems exactly the opposite to me: Herbert didn't want robots etc in Dune, so he came up with a religious figleaf to justify this.
It seems exactly the opposite to me: Herbert didn't want robots etc in Dune, so he came up with a religious figleaf to justify this.