Goal post shift. People "pre viewing" a film don't "warn" producers, writers, and actors that a film will suck balls. Certainly the "warnings" started well before the film was finished. I wonder why....Putting aside how Trailers are supposed to be showing you what a movie/show is going to be like.
They do this thing called "pre viewing" where they have a bunch of people watch the movie and tell them whether it's good or not.