Footnotes in novels. If it’s not important enough to make the main text, it’s not important. I’m not reading it.
Novels where the author has shoehorned in every single possible contentious issue known on earth. So a trans character with lesbian parents who are of different races, has been bullied at school for being super smart while also strangely attractive and lives in a single wide trailer. With a drug problem. Their friends will be a glorious mix of white/Asian/black/Hispanic/Native American. They will never ever say what they mean. There will almost certainly be some horrible traumas involving abuse, suicide, animal cruelty, poverty, neglect. All on the one character. I’ve come across a few too many like this recently.
Speech marks, good grief. Anything by Sally Rooney is basically unreadable. Sadly this seems to be in fashion at the moment.
Endless series that should have stopped after about 5 books. If it looks like this is going to be the case, I don’t even start the first one. YA fantasy (which is problematic anyway) I’m looking at you here.
I suspect I am getting old and grumpy.