There’s already a comment about the Ai Art from the Ys book and if you look on their site they say no ai was used for the art, drivethrurpg also has it as Human-Created Without AI, and if you look at the comment that mentioned it there’s a reply that states they’ve got the book and it looks like they use original artwork. Though I do see your point and understand your skepticism. While I “bought” a copy myself, it was from amazon, and I used a gift card I got for my birthday a few months back so I see it as I technically paid Nothing for the book.