As a children’s librarian who truly enjoys middle grade and YA fiction, I am hurt at the inclusion of Rick Riordan on this list. The rest of them I agree are not great, but Rick Riordan (and anything published by his imprint) is a fucking delight! And also has books for adults that are very good for a quick read (classic disgraced detective novels).
I do also read other things, but not all books that aren’t for adults are terrible.
Why The Poppy War? I wouldn’t put it anywhere near my favorites list but I did enjoy it. Curious as to why it would be a red flag. It’s been a while so I can’t really remember what might have been problematic, only that my overall thoughts were it was an enjoyable read.