You can say that MC is doppleganger of Joy Boy, but not Joy Boy. He do what Joy Boy do, but he is not Joy Boy. The story of "original" One Piece is not about Luffy (Joy Boy), but MC. You can see the prophecy of this story is not about Joy Boy, but MC. So, Imu make that statement about "original have already lasped).
Jodio:Because he had such a thought