Luffy defeating Kaidō in One Piece Chapter 1049 has been one of the biggest milestones of his career as a pirate. It officially made him one of the Four Emperors and established him as one of the strongest living characters in the world of One Piece. However, the end result of the Luffy vs Kaidō battle has created a problem for the story from a narrative standpoint.
Source：https://www.cbr.com/one-piece-luffy-beat-kaido-dilenma/
