I think this is completely missing the point when it's talking about "the minutiae of art". It's making two claims at the same time: art is better when you suffer for it and the art is good whether or not you suffered. But none of that is relevant.
When Wyeth made Christina's World, I don't know if he suffered or not when painting that grass. What I do know is that he was a human with limited time and the fact that he spent so much of his time detailing every blade of grass means that he's saying something. That The Oatmeal doesn't draw backgrounds might be because he's lazy, but he also doesn't need them. These are choices we make to put effort in one part and ignore some other part.
AI doesn't make choices. It doesn't need to. A detailed background is exactly the same amount of work as a plain one. And so a generated picture has this evenly distributed level of detail, no focus at all. You don't really know where to look, what's important, what the picture is trying to say. Because it's not saying anything. It isn't a rat with a big butt, it's just a cloud of noise that happens to resemble a rat with a big butt.
