Regarding Glass Onion, I have no desire to watch it, mostly because it didn't sound that good, and if I wanted to watch Daniel Craig walking around talking like a hick for a couple hours, I'd rewatch Logan Lucky.
One thing from what I've seen, it sounds like by the old definition of Fair-Play detective stories, I'm pretty sure that the plot of Glass Onion actually fails. To my thinking, just from seeing some reviews, it fails the spirit of rule 5, 6, and 10.
For those who didn't have my high school literature curriculum, and if you did, hello fellow alumni, the 10 rules were a set of rules to try and ensure that mystery authors were writing stories that could reasonably solved by the reader if they were paying attention, and avoiding stupid bullshit i.e. Rule 2, you can't have the mystery resolved via the supernatural, though the general exception is if you actually set it up in the story.
Though as for the rules it breaks, I'm going to just list what I know off the top of my head, though take it more or less with a grain of salt, as I haven't watched it, and have no intention to. The rules were created in 1928 by Father Ronald Knox.
5: No Chimaman must figure in the story: Basically, the idea was, the villain shouldn't be identifiable by just being the obvious ethnic target with no deeper motivation, in Knox's time, that was the Chineese. Personally, at this point, I'm pretty sure the fact that everyone guessed that the straight white guy was the villain, which means you may as well not have even concealed the fact.
6: No accident must ever help the detective, nor must he ever have an unaccountable intuition which proves to be correct: From what I heard, the vast majority of clues are gathered more or less by Daniel Craig stumbling onto people to eavesdrop on, and they just unintentionally feed him necessary information.
10. Twin brothers, and doubles generally, must not appear unless we have been duly prepared for them: From what I understand, Andy is impersonating her dead twin sister, which characters should reasonably know, but don't. Not as sure on this one, but it sounded retarded when I heard it, and it sounds like the plot would shatter into about a billion pieces if she didn't have a twin. This also breaks Rule 8 which means that when the detective finds a clue, the viewer should be aware as well, when the film does flashbacks and literally adds more characters into the scene, and Andy had evidence that she doesn't reveal until later, because of breaking rule 10.
Anyway, enough Lit 101 autism. The whole subverting expectations is so nonsensical when people do it for its own sake. Its literally the "I was just pretending to be a retard" meme.
"Do you promise that your detectives shall well and truly detect the crimes presented to them using those wits which it may please you to bestow upon them and not placing reliance on nor making use of Divine Revelation, Feminine Intuition, Mumbo Jumbo, Jiggery-Pokery, Coincidence, or Act of God?"
-GK Chesterton British Detection Club Oath