I think you've misunderstood this. Listen to the two recent episodes of behind the bastards on this topic if you want to get a good handle on it.
This is half the problem: these books ARE selling. I do try to be kind, but I can't deny that there are a lot of idiots in the world who seem to have a fair amount of disposable income.
They are buying these books for their children, or being duped by a pretty front cover, or a synopsis that sounds up their alley.
The books aren't 'word salad' so much as they are simply a cheap facsimile of actual stories. They have the elements of storytelling, munged together into a brain-breaking stew - but they aren't word salad, they just aren't human.
This whole situation is making me fairly uncomfortable, but also making me laugh. I love books. I love literature. The idea that one of the largest retailers in the world: an almost tech-giant that made all of their money flogging books to the masses cannot seem to clear its platform of fake books ghost written by computers with a little unscrupulous human help is simultaneously delicious and disturbing as hell.
I hate amazon with every fiber of my being, but this doesn't feel like a good omen for my children.