ZKK is sort of in limbo. There's too much build up prior to this chapter for Kaido to leave this arc alive and Zoro is the perfect man for the job. But Oda's choice of panel spread really does hurt it a little.
I'm still on board, mostly because I think ZKK is a fitting end for Kaido and the only one that keeps Kaido out of the story in the future. We don't need Kaido coming back and being a second string threat end of series. It's better to go out on a high note in his own arc and in arguably the most memorable moment in the manga after Ace's death.