An essential aspect of an artistic work, whether it is structured from words, matter, sound, or behavior is that it has a human author who “intends” it to be art. An important part of this is that it has no other intended purpose. (This is what separates it from design.) So it needs a human author. The AI created images could be turned into art if someone could credibly claim such authorship. In the instance of the images in the post, they are not intended as art, so some kind of metaphysical alchemy would be required to convert them. (A big name modern artist claims them as his own, with permission from the developers, and puts them in a show.)
In addition to the work itself, the framing or presentation is essential to complete the artistic product. Printing the images out on nice material and framing them would help.
John Cage’s 4’33” is (IMO) a brilliant performance piece. It requires the context of a stage, of live musicians to be effective. It doesn’t work so well as a recorded piece!