What are you talking about? Only 1% of reviews are 1 star, and from a quick perusal, it looks like several of the 1-star reviews are by imbeciles who are mistakenly rating a different book entirely.
This looks like some sort of technical error on Amazon’s part, where a bunch of one-star reviews of other books somehow ended up on this page. If I were the author, I’d be pretty miffed, but the content of the reviews doesn’t seem to match the content of the book as described at all.
If you look at Wonky Donkey, you see exactly the same number of ratings and the same star pattern with the same reviews. The two books have their reviews completely mixed together.
There’s usually a “report problems” link on Amazon but I didn’t see any. If you can find one, then please send in a report.