Do you want to bet that Kidd won’t fight Big Mom? Kidd just said he would take care of Big Mom last chapter, you really think his conflict with her ends here? No way Oda doesn’t take this Kidd and Big Mom conflict as a chance to at least explain what he did when he invaded her territory. This whole Big Mom meeting Nami and Tama plot line is literally just so Zeus can find them together and go to Nami once Big Mom says something like, “I don’t need you anymore.” Then Nami will get her “name chapter” or whatever and fight Ulti with Zeus by her side now.
He was against the alliance whole time and he was right because now also BM has a beef with Kaido's subordinates.
Any action that they take is Kaido's responsibility to begin with.
It's Kaido who ordered them to attack the village, they wouldn't an attack by their own
Perospero plot finally comes to an end, now also Big Mom is against this alliance