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.
Perhaps, but this sub has a special kind of hate against RPO and The Alchemist. Every time there’s a discussion about books that people don’t like, one of these two (or both) immediately pop up with sometimes pretty wild takes. Last I saw, someone said that they considered Mein Kampf less insulting than The Alchemist…really, I’m not making that up.