One Piece: Will Law and Kid Ever Become Yonko?

gamerant.com:

One Piece is swiftly moving towards its conclusion, and it was officially confirmed that the series is entering the «Final Saga.» After Kaido's defeat, Oda has mainly focused on providing new details about some of the characters in the series. Oda also teased the readers with the possibility of showing them another Ancient Weapon, namely, Pluton.

Another huge revelation from the Wano Country arc was the information about the new Yonko. With Kaido and Big Mom gone, two new spots for the position of Yonko opened up. One of these spots was taken by Luffy, who was undoubtedly the MVP of the arc and the other spot was given to Buggy. This revelation shook the entire One Piece fanbase, but above all, it directly affected two characters- Eustass Kid and Trafalgar Law.

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The inclusion of Buggy in the Yonko did raise a few eyebrows, but it does seem like a rational decision. Buggy has earned the reputation of being a very dangerous pirate by fooling all the people around him. In terms of strength, there are hundreds of characters, who can defeat Buggy in a fight, but Buggy makes up for the lack of power with his brains. Buggy's involvement in the Summit War earned him the title of a Shichibukai, which he used to start his own delivery service.

Buggy's association with Shanks improved his reputation further. The people in Marineford were not aware of the fact that Buggy and Shanks were part of the same crew, which is why Buggy was able to raise talk to Shanks openly without any fear. Incidents such as these fooled the others into thinking that Buggy was a hot-shot. Why Buggy was suddenly promoted to the position of Yonko is unknown, but it is plausible to assume that the World Government might have