I would be more tolerant if Oda found better written and more justificated reasons to spare the Straw Hats and their allies from Big Mom and her crew but he just keeps making very silly and bad plot tools to do it such as the Tamatebakko box, Big Mom's food sickness, the wedding cake, Nami getting Zeus, Mother Carmel's picture, the merienda, Brûlée being used by the Straw Hats, the waterfall scenes with Prometheus being absent or Perospero and his siblings not using their powers to effortlessly make their ship cross the waterfall, Big Mom's amnesia with Napoleon doing nothing, this, etc...