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.
And it was just this plain story about some kid. I thought it was fine, but definitely not life changing. I couldn’t even tell you the plot points, as it was all pretty dull.
I read it last year, and I describe it as Catcher in the Rye if the protagonist wasn’t an absolute idiot. It’s just a charming poetic book about a kid growing up in hyperspeed with some added mysticism to make it interesting. Definitely not my favorite book, but definitely a short read that I enjoyed.