The artistic and thematic reason is obvious. It's a commentary on the show and AI art in general. To ignore this message because it "looks like AI" devalues the entire concept of human art.
I will push back slightly on the idea that slop is only slop because it's bad. AI art will always be slop because of its very nature, it's not even possible to describe ai art as "good" because that's not a quality it can even possess.