Can you point out what made you think the images were AI generates? I suspected they were (before reading in this thread everything is AI generated), but I couldn't find any of the usual signs.
I thought they were AI because I suspected nobody would pay an illustrator/actually spend time making those illustrations for a story like this.
The fact that the whole text was AI came as a surprise. I did notice that weird inconsistency about feed pricing mentioned in another comment but just thought the author made an error or I misunderstood something.
The combination of a "hand-drawn" art style, with text that is obviously not hand-lettered, is a dead giveaway. It would be very weird for a human to do that.
If you have an eye for fonts, the text itself stands out too, at least to me. The font style of "HARTMANN SOFTWARE MECHANICS" is a particular combination of clean, bland shapes and rounded corners that you rarely see in human-designed fonts, but it's super common in AI-synthesized text. I guess it's sort of an average middle ground in the abstract space of letter forms, and the lack of distinguishing features is what creates the impression.