In the world of One Piece, Luffy used to be a character full of intelligence and humanity. He uses his own way to avoid trouble, but he also deeply understands the feelings of his teammates. Back then, Luffy wasn't interested in Nami's past, but when Nami asked for help, he didn't hesitate to put his straw hat on her head and show his unwavering support. These are the embodiment of Luffy's early character design.
However, as the story progresses, Luffy's character figure seems to begin to change. He seems to have become more impulsive and less thoughtful than before. Oda seems to be too obsessed with Luffy's "frank", "free", and "hot-blooded" characteristics, resulting in Luffy still maintaining his original personality traits even after experiencing major events such as his companion being beaten away and his brother dying in front of him.
This restriction on the growth of the character is not only reflected in Luffy, the entire Straw Hat Pirates seem to be under the same constraints. They have gone through countless ups and downs together, but the growth of the characters is limited by Oda. This situation is especially evident in the Wa Ota chapter, where Luffy's attitude towards sacrifice has changed 180 degrees.
In his early years, Luffy knew how to solve problems with wisdom and courage. He proved his faith through action, not violence, which is admirable. But after the Chambord Islands chapter, Luffy's image began to appear as a giant baby, and he became easily swayed by emotions rather than influencing others.
Oda seems to have given up on exploring the deeper development of the character in his later works, much to the disappointment of some fans. They believe that a character should grow as the story progresses, and that their mind and strength should improve at the same time. But now Luffy seems to only have an increase in strength, while mental growth has stagnated.
In short, the image of Luffy in "One Piece" has undergone a transformation from wise and foolish to reckless. This change may be related to the author Oda's insistence on character setting, or it may be due to the inevitable problems of long-form ** works. In any case, whether this once-beloved character can continue to win the hearts of fans today can only be seen by time.