How did it shatter that conception exactly? Luffy struggled to connect hits in WCI. When he connected, he one shot Cracker, and
was about to take down Katakuri in 4 moves.
Go and re-read the Kaido fight.
Gear 4 send Kaido flying and crashing through buildings
Your precious Fujitora was bruised by a measly Gear 3 which is like 10x weaker than KG.
You realize on Oro Jackson I literally predicted Luffy's next powerup would be advanced CoA, 10 chapters before it happened?
That was one of my biggest threads there. And I did it because I said Luffy's physical strength is already at the peak of the One Piece world. His problem with Kaido is hardening.
You realize he literally walked away when he could have killed Jozu right?