Oda's handling of Zoro in this arc has been abysmal
to be fair, most of the Post-TS for Zoro has been abysmal
his progression in the arcs make no fucking sense
Act 1 - buddy cop with Luffy and then get lost
Act 2 - builds up plot of swords, protecting Hiyori and Yasuie, getting Enma, pledges to avenge Yasuie
Act 3 - now wants to fight Kaido, fights him, gets CoC, gets defeated, heals up, fights King now, gets ACoC, defeats him and is done
Oda made story lines for Zoro that tied his character to both Orochi and Kaido during act 2, in the end King is his final fight and it's like, okay? that was weird...