"The weak don't get to choose the way they die."
Tbis is a concept Oda has been building up throughout the course of the New World, and especially within this VS. Yonko Saga.
Kaido is a character who is seemingly built up as the Strongest in the verse, and it just so happens that he has been trying to be the maker of his own destiny in regards to death for decades, yet no matter how much he tries, it constantly ends in failure.
The overarching theme here is being made abundantly clear, that no matter how much Kaido is touted to be the strongest, he will be forever doomed to not be able to go out on his own terms because despite what we see on the surface of his character, deep down he is in fact weak.
All these things you think is foreshadowing his death, is in fact foreshadowing the opposite. A battle the likes of which is taking place on Onigashima, is a battle that Kaido would have no problems losing his life in. It would be a Grand death that would cement his name into history. But from a narrative standpoint, Kaido will never be allowed to choose how he goes out, made apparent by the fact that no matter how many times he has tried over and over again to go out on his own terms, he fails.