The first paragraph talking about reviewing, editing, and refining, is literally the job of a Literary Editor when working with an author on their literature.

The first paragraph talking about reviewing, editing, and refining, is literally the job of a Literary Editor when working with an author on their literature. Editors do not have any IPRs over the resulting literary work. Following that simile, the AI is the "author" and the developer is the "editor". Given that an AI cannot be an "author" under copyright law, there is no copyright in the final product.