In Chapter 1014 Kaido said to Luffy: “You couldn’t be Joy Boy either”.
That happens because Kaido tought Luffy died for good when he was thrown in the water instead of reviving, and he knew that in order to be Joy Boy you must die and come back, that also explains why he tried so many times to kill himself.
Kaido was trying to have the last breath and revive as Joy Boy, as it is stated in the Binks’ Sake song:
In latest chapter Momonosuke with his Voice of All Things confirmed Luffy’s death:
- Chapter 1015: Luffy unconscious, even drowned, but still Momonosuke heard Luffy’s “voice”.
- Chapter 1043: Luffy unconscious, only laying on the ground, but Momonosuke no longer heard Luffy’s” voice”