For example, I stumbled on https://www.amazon.com/dp/B0DT4TKY58 and had never heard of the author. Their page (https://www.amazon.com/stores/author/B004LUETE8) suggested they were incredibly prolific in a huge number of areas which already felt off. No information about "Robert Johnson" was available either. The publisher, HiTeX Press (https://www.amazon.com/s?k=HiTeX+Press) has a few other authors with similarly generic names and no information available about them, each the author of numerous books spanning a huge array of topics.
It feels even more bewildering and disheartening to see AI slop come into the physical world like this.