Glass Onion tries to be funny / satiric with a lot of tropes, cultural references and supposedly witty dialogue, but it just ends up feeling dumb and cringe. It's more reality TV than murder mystery.

It's too light, too goofy, it doesn't feel real and believable at all. The screenplay doesn't take itself seriously, it just throws in a bunch of tropes and ends up being silly and all over the place.

On top of it all, it has an extremely slow start (for HALF of the movie, nothing really happens) that has you confused and wondering if you're supposted to know WTF is going on.

It's bad, forget it.