Earlier quoted context omitted.
If I wave my camera around taking lots of pictures, and then find one that I really really like I can copyright it. If I generate a bunch of AI images and find one that I really really like, I think I should be able to copyright that too. In both, the creative spark comes from discerning what has value.
Careful with your wording: you don't generate AI images, the AI generates images. You use the AI to generate images. An argument could be made that the AI acts like the camera and the selection process is the creative act. The text hints at this when it mentions curation. But curation also provides a far more limited protection than authorship (e.g. consider the copyright of phonebooks).
I'd argue that in the case of AI generated work as we see it now, especially if a prompt from the user is required, that work would not exist except for the action of the user, and is thus created by their action.