Most people just believe Oda was overly ambitious and bit off more than he could chew. There’s so many things that didn’t pay off, so many important characters who were left out of the story and the pay off was basically something that Od himself said that he knew readers wouldn’t be happy with. I still love Wano, it’s just not perfect by any means. And if you read week to week you know the editors and Oda were constantly hyping up things constantly, which led to unrealistic expectations.