Because, Oda isn't going to make Zoro irrelevant for the next 20-30 chapters while everyone else fights. When has he ever done that?
Thats another thing I don't get about ZKK, Luffy is supposed to win, but Zoro is supposed just show up out of nowhere and kill Kaido? Claim victory for himself after Luffy wins? Like I have no actual "Problem" with ZKK, but its the logic I don't actually get with it lmao.
IF Zoro stayed on the roof the entire time and IF he continued to fight with Luffy in a 2v1 (whilst maybe temporarily being knocked out at a point like now), then I would understand the point, but Oda has clearly communicated Zoro is done with Kaido.
Like are you actually satisfied with Zoro being out for 10s of chapters while everyone else gets powerups, action panels and dedicated fights? Somehow lopping Kaido's weakened head off is more interesting than getting 2-3 chapters to fight a YC if he recovers?
I simply do no understand the desire for it, especially after this chapter.