American literature in particular is a lot more ego based. Readers often read and enjoy stories specifically because they identify with a character. It is about them first and the story second. Killing central characters, especially popular protagonists or main characters, can be devastating to American readers
By “falsity” I mean this: within a fiction story the distinct elements of the plot need to have some anchor in reality – in the world we actually live in. Even if a story is set in outer space or deep into the future or in the made-up fantasy world of Middle Earth, there needs to be a sense of reality and truth, such that this event or place or action could have happened somewhere that is real.