The complexity of the story might be a factor. While One Piece has a complex world with different races, islands, and powers, it can be a bit convoluted for some. Also, the character design for some secondary characters may seem a bit simplistic compared to other high - end fictions. Additionally, the way the story progresses with the same formula of finding a new island, facing a new enemy, etc., can make it seem less innovative for some, leading to the claim that it's not peak fiction.
One reason could be the length. With so many episodes and chapters, it can be overwhelming and might lead to a feeling that it's not as tightly crafted as a shorter, more concise piece of fiction. Another reason is the predictability in some plot elements. For example, the hero always seems to come out on top in the end, which can make it seem less 'peak' for those who prefer more uncertain outcomes.
Chapter 308, "Want me to surrender to him? Don't even think about it!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter turns that into something concrete by moving from Jiang Li sighed, "Where is your mind wandering?
Chapter 544, "I Shouldn't Have Stopped You from Pursuing Shang Shaojing Back Then", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 467, "Your Boars Have All Run Back!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. Early on, He had recently been meditating on how to accomplish the tasks.... By the end, It wasn't until the boar had eaten its fill and even urinated....
Chapter 646, "This person deserves a slap in the face!", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Yan: "....." Bloody green tea, get lost!
Chapter 294, "President, This Kid Says He Is Shiguang", is the clearest early answer because it turns Hey's situation into a concrete plot event. The chapter turns that into something concrete by moving from Speak of the devil, and he shall appear. to You, have you come of age yet?.
Chapter 432, "Return to the Homeland!", is the clearest early answer because it pushes Zhao Lang into a new phase or setting. The chapter gives readers a real answer by opening on Jiang Li had also received the updated rankings. and ending on He looked at the owner with a hint of surprise..
Chapter 398, "Have You Finally Decided to Use Gu on Your Family?", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event.
Chapter 682, "Too Conspicuous to Keep Around", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Taking advantage of the still-open elevator doors, Su Yinwan quickly...
Chapter 654, "Did Everyone in Team Q Go to the ICU?!", is the clearest early answer because it turns Lili's situation into a concrete plot event. The chapter turns that into something concrete by moving from All of a sudden, all public opinions burst out.
Chapter 472, "The Stream Dried Up?!", is the clearest early answer because it turns Guan Xiong's situation into a concrete plot event. It opens with Guan Xiong and his team had not had a proper meal in almost two or... and closes on Zhuola was the earliest to wake up..