My answer wasn't meant to be taken seriously, it was a way of saying we can't take things too literally. I feel like ZKK supporters mix everything up. Kawamatsu makes a powerful speech about samurais inheriting their companions' will by using their weapons to fight the remaning enemies and somehow it becomes "Zoro will kill Kaido". I would agree about Kawamatsu's speech having a strong symbolic sense tied to Zoro because he took Oden's sword and uses it to fight those who brought darkness to Wano. But then mixing that up with Oden threatening to cut Kaido's head to come to the conclusion that Zoro will kill Kaido is going a step too far in my book. I consider that confirmation bias.
- Enma is Oden's --> Oden died --> samurais inherit people's will through their swords --> Zoro gets Enma and fights Beast Pirates --> Zoro inherits Oden's will = good, logical line of thought in my opinion
- Enma is Oden's --> Oden died --> samurais inherit people's will through their swords --> Zoro gets Enma and fights Beast Pirates --> Oden once said he would cut Kaido's head -->Zoro is going on the roof --> Zoro will kill Kaido = overinterpretation fueled by wishful thinking
That's my stance on the ZKK thing but in no way I mean to disrespect ZKK believers.
But Zoro was always going to fight the Beast Pirates. He didn’t need Emma for that. I don’t see how ZKK is an over interpretation. Especially since it’s pretty clear cut. Oden wanted to beat Kaido, he didn’t. Zoro inherited his blade and is heading for Onigashima.
At this juncture, any number of things could occur. Zoro fights the Beast Pirates, which again he was always going to do, and not face Kaido directly. He fights as a main support for Luffy against Kaido Law against Doffy, (this is what think will be the case). Or Oda takes the unconventional role and has Zoro finish off the antagonist. But the last two only need for Zoro to meet Kaido to enter possibility.
I’m on mobile, so I can’t elaborate further, but characters have repeatedly jammed the imagery of dragon decapitation in this arc. Yasuie as he was about to die, Oden just before he cut Kaido, Kin as they were about to set off to Onigashima, even Gyukimaru’s recount on Ryuma mentioned killing a dragon through decapitation. You could say some of these is taking it too literally, but when the same picture is being reiterated, I don’t think it’s wise to dismiss.