This reflects the opinions of many readers after witnessing recent events, especially in One Piece chapter 1034.
Power boost is a term not unfamiliar in action manga like One Piece. Oda fervently injects power boosts to help main characters surpass formidable foes like the Four Emperors and commanders of the Beast Pirates. Luffy, Zoro, other Straw Hat members, Kid, and Law all receive authorial enthusiasm in power boosts to confront mighty adversaries.

From this arises a fan-observed pattern in Oda's power boost repertoire during the Wano arc, termed by fans as 'Haki reminiscence.' Characters visibly strengthen by recalling mentor's teachings, resonating music, or learning from adversaries. However, this pattern doesn't hold true for Sanji in the Wano arc.
In chapter 1034, Queen unveils the abilities of Sanji's siblings, the culmination of Judge's lifelong work. This is evidence that Queen is earnestly facing Sanji, holding significant meaning in his character development. Throughout the battle, Queen continuously taunts Sanji, emphasizing his 'family,' including siblings and the beloved old father. He consistently compares himself to Judge, deeming himself superior not only to Judge but also boasting supremacy over Vegapunk.

And he doesn't just know about Judge's inventions; he copies and transforms them into his own power. In other words, Sanji, at this moment, isn't just facing one of Kaido's calamities but also confronting his siblings and the potential ability he may possess - Black Stealth.
With Queen, the one always eager to triumph over Judge in every aspect. For Judge, the person who consistently views Sanji as a failure. Sanji inadvertently gets entangled in the intricate web of both individuals. Beating Queen, he will make him bitterly realize his defeat to Judge, the one who 'created' Sanji. As for Sanji, after defeating Queen using the abilities of his 'siblings,' he proves he is not a 'failure' but a powerful warrior with a range of emotions, a perfect being surpassing even Judge's masterpieces.

Unlike other characters, Sanji's path to increasing strength holds genuine significance. Oda brilliantly intertwines his past, personality, and most precious qualities into how his story unfolds. In the plethora of power buffs in the Wano arc, Sanji's narrative is intriguing and holds the most meaning, evoking intense emotions for readers. Many readers believe that in Wano, Sanji is Oda's true favorite, overshadowing even Luffy or Zoro as we might think.
This is a personal article by the author on the meaningful development of Sanji's strength without the need for reminiscence, mentor's advice, or resonating music. It emphasizes that Sanji is the most meaningfully evolving character crafted by Oda. The article incorporates references from the One Piece Vietnam fanpage. What are your thoughts on this?