There’s definitely frustration in how quickly some sanctioning bodies slot fighters into top rankings after moving divisions, but in practice rankings aren’t strictly based on “how good they looked in one fight.” They weigh past resume, unbeaten status, and promotional backing heavily.
Nakatani moving up and landing high rankings reflects his dominance at lower weights more than his debut at 122. That said, boxing politics + promotional influence absolutely shape mandatories and cards, which is why it often feels inconsistent or “corrupt” from the outside.