Luffy defeating Kaido was always a part of the ZKK theory. It all depends on Kaido, will he stand up after that or not?
all of baroque works he fought, he didn’t kill and any main opponent he battled once again, he failed to kill
He is not killing a yonko if rift raft can survive his most potent cuts.
Oda isn’t even the killing type……..you should know this