It baffles my mind that in a story about "pirates," with main character wanting to become "the king of the pirates," where all "strength titles" are given only to the pirates, where the main two villains of the story are pirates, where the author himself admits that one piece was always about Luffy fighting against the 4 Emperors and that he added the Marines and Shichibukai just because he thought that it would make the story more interesting: people still think that Yonko=Admiral.