: By eventually revealing the truth, Luffy doesn't just destroy Gaimon's dream; he liberates him from his self-imposed prison. Redefining "Treasure" Gaimon | One Piece Wiki | Fandom

This serves as a critical thematic warning for the Straw Hat crew. In a world where every pirate chases the "One Piece," Gaimon represents the danger of obsession. His story suggests that a life lived solely for a material "X" on a map can lead to a hollow existence, especially if that treasure turns out to be non-existent or long gone. Luffy’s Radical Empathy

: Luffy realizes that for twenty years, those empty chests were Gaimon's reason to live.