Folie à Deux
A few years ago there was a movie called Joker. It was controversial; critics tended to love it or hate it (“bold, devastating” vs “as social commentary, Joker is pernicious garbage”), and the people who watched it tended to be at either extreme as well.
Inevitably, this year there was a sequel, Joker: Folie à Deux. Just as inevitably, it bombed. Even the people that loved the first one hated this one, it tanked at the box office, and it scored three points lower on IMDB than the original. To top it all off, the ending showed that the main character wasn’t the Joker, just a joker, so they essentially lied the whole time about what the movies were about.