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.
Oofff! Adolf. Doesn’t matter which translation. I’ve read English, my Spouse German. Crack pot. Unhinged from reality. Writing would be laughable bad if you didn’t know who he was. It’s like his “art work”. At first you look, then closer, then nah that’s nothing but shit. Or a preschooler with some paint for the first time.