What cope? The more explicit reference to the samurai way of death is linked to Usopp's scene and his criticism of bushido ideals, which is supported by Izo. You are free to read that Oda is hinting at Zoro killing Kaido (I assume that's what you have in mind), but, first and foremost, this is Oda questionning Wano's culture through one of the main characters and a native who got to leave and know better.
Zoro chapter 1033 go read it again, he is well know about the sunacchi which is exactly this, the way of death connected to the bushido. Zoro is from day 1 a bushido (not pirate).
Go read chapter 994: I love the way of samurai, but death is what completes a person.