We just got a scene of a kid Kaido and Zorocucks think Oda is going to kill this man through one of the Strawhats?
Guarantee there will be a scene Kaido fends off some world government threat which takes his life. He's content he's found Joyboy now there's no point in further conflict in Kaido's eyes now.
Knowing Oda there's still Kaido's redemption in Yamato's eyes to be played out not for what he's done on Wano but what he's done to her.
This chapter clearly set this up.