If there will be delay because of Oda health, that would be strange at the very minimum. I mean we know that Oda always write 3-4 chapters before they realized. So...it means that story writing online...which is scary...
Also I feel like that OP selling fall made Oda feel bad...
Well, even if I litteraly loved last chapter, I still think that thing what happened with Kinemon and Kaido is true dogshit writing and fail on readers expectations. I'm really curious how Oda will fix things, case for now I don't feel any danger coming from Fraudo and BigMom. I hope Oda finally feel bad for everything that he did with readers, who even feel like drop one piece...