I don't get the issue with Kaido's defeat
Man was a monster taking all these attacks left and right on top of lifting whole island continuously and even then it takes an island plus level attack with internal destruction to take him down
He also showed island level flame mode and only got defeated because he took Luffy's attack headon
It's not that anticlimactic. Kaido has lived up to his WSC status
All we need is more Flashback
It's because people have been waiting for Kaido's awakening since the fight started yet just like with BM Oda is being unclear with it.
Me I think it's over, three chapters to build-up Bajrang gun + Kaido showing gigantic and epic elemental form to directly clash with it + dramatic flashback of Wano Citizens followed by Kaido's own flashback + last chapter ended with three consecutive doublespreads of Kaido getting punched and sent straight to hell+ Kaido and Orochi downfall being directlt juxtaposed with Wano citizens hanging lantern wishes of seeing them gone + ticking bomb of the arc (Onigashima falling) being defused (which always happen around the same time as the main villain defeat) .
Even if Kaido character may not be done in Wano, I'm confident the fight with Luffy is over.