I’ll go with the low-hanging fruit: Mein Kampf. I’ve read it, cover to cover. As a piece of propaganda, it’s good. As an example of good writing? Absolutely not (though I will admit I have only read it in translation). Oh, and the whole fascist, racist, and generally shitty worldview of the author that he infuses into the text. And the fact that the author is literally Hitler. You 5-star that book? You’re a Nazi. Period. And as a Jewish person, I don’t look too kindly on them.
Just wikipedia dianetics to see why:
“Dianetics is a set of pseudoscientific ideas and practices regarding the metaphysical relationship between the mind and body created by science fiction writer and Scientology founder L. Ron Hubbard.”
“Though it is presented as a form of psychological treatment, Dianetics and its core concepts have been rejected by psychologists and other scientists from the outset and are not supported by credible evidence.”
It basically says if you follow Scientology (and spend thousands on thousands of dollars to follow their emotional “auditing” process), you can cure the ills of your life, including things like blindness, heart disease, etc. 🙄