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.
This is the thing, if you take it as you did that’s fine because yeah that’s pretty much what it is.
It’s the people who react to it like it’s the most amazing thing they’ve ever read and it Changed My Life that’s the red flag, dude it’s an amusing fantasy with some spiritual mumbo-jumbo in it that sets you up for a Great Revelation at the end but instead >!he just finds a fucking buried treasure!< if that changed your life I feel for you.