Kuma and ZOro literally just met and that didn't stop Zoro from having his moment with him
Also bro Zoro gave Kaidou his second scar, that's more than enough history.
Kuma was never meant to be anything but a plot device for his introduction and zoro's moment .. it never required any history for him to have that moment with him.. matter the fact that crux of the moment had less to do with zoro and kuma and more to do with Zoro and Luffy so this is a bad argument
and thats not history with kaido thats just the recent past which did minimal in terms of any characterization in their relation.. it was just condescending and a bit of respect on Kaido's end after zoro scarred him..
and if zoro was hell bent on killing kaido and the narrative made so explicit that zoro has the development he needs to kill the main protagonist of an arc.. then why isn't the scar even decisive anymore.. or the fact that him entrusting Luffy the job later..
and how's their interaction gonna be any more characterized
i don't see a grandiose ZKK zoro pulling with 3ss berserk one shot kaido after getting the most ridiculous asspull PU out of no where entailing bizarre phenomenon.. post Luffy defeat again
matter the fact even Zkk happens and zoro merely kills kaido after his defeat.. your whole exaggerated premise would basically be redundant..
from zkk it becomes Zoro executes Kaido (ZEK)
and surely these differ in meaning and how zoro would go about em.
after that happens in no way in hell I'm seeing folks calling it a ZKK its ZEK bitcx