Fan Casting All For Nothing in Sort by Tropes

Sometimes, a Story Arc completely destroys the point of an earlier arc in the same story. It could contradict the early story's message, or it could reveal that the events we cared about never happened or weren't what they seemed. A hero's decisions don't seem so heroic if it turns out that they were manipulated every step of the way. And if a character goes through a Face–Heel Turn or Heel–Face Turn, their earlier stories become irrelevant when we know they'll disavow it all.