Amazon could hire people to check books and at least try to label what's AI-generated before it's offered for sale, but that would cut into profits. And the company's probably hoping people either won't notice they were sold AI slop, or won't complain and demand a refund.
And the people using generative AI for all the different types of fraud it's used for of course hope people will be gullible and won't notice everything wrong with it.
Generative AI unfortunately tends to bring out the worst in a lot of people, because it requires so little effort from them and lets them pretend in all sorts of ways that bolster their egos or reward them with attention, grades, money, etc. that they really don't deserve.
What that book represents is often called "pollution of our information ecosystem."
But it's also an example of how quickly genAI has become a dry rot in our society, degrading it, lowering standards, and tempting people to commit fraud with genAI any way they can. GenAI was never going to help. And just getting people to think it's OK to use genAI when the entire industry is built on theft of the world's intellectual property was alread one huge step toward that degradation and loss of ethics. Throw in the loss of standards with people thinking it's OK to use tech that always make mistakes, and a horror story like that AI-generated encyclopedia becomes almost inevitable.