Franky got some love shown to him though idk if this means he has haki. When Franky punches Luffy to save him from Saturn, Luffy is seen spitting blood. Maybe it is inconsistency on Oda's part but then it will also not make sense for Franky to hit Luffy with haki, he does not want to hurt his captain.
Which leads to the conclusion that even though Luffy in base has always been rubber with no activation required but due to using G5 the resultant fatigue also ends the blunt immunity granted by rubber i.e. Luffy does not retain his rubber properties at the end of G5. This is not a drawback of G4.
My guess is Luffy will evolve at least one more time cause currently he is not Kaido, Shanks level. He achieves similar level for a short period of time but with a very big drawback at the end.
Which leads to the conclusion that even though Luffy in base has always been rubber with no activation required but due to using G5 the resultant fatigue also ends the blunt immunity granted by rubber i.e. Luffy does not retain his rubber properties at the end of G5. This is not a drawback of G4.
My guess is Luffy will evolve at least one more time cause currently he is not Kaido, Shanks level. He achieves similar level for a short period of time but with a very big drawback at the end.
