I was also confused by the small size of the images, and the small incongruities in them, but I didn't realize they were ML-generated, I thought it was some surreal and elaborate way of illustrating.
The narrative really throws you off because it's clearly human, and I'm glad the small images didn't spoil the trick too soon.
I'd suggest reading it in Firefox's Reader mode. It placed each image before its corresponding text, which led me to believe they were small for that purpose. Really added to the experience, I believe, since I didn't have any doubt as to why the images were the size they were.
Now I'd love to see a full book set in the world of this library, though.
The narrative really throws you off because it's clearly human, and I'm glad the small images didn't spoil the trick too soon.