Kishi's statement regarding he didn't know how to kill Madara, seems to have backfired on him, due to the way the east and west understood that statement
It was an attempt at creating a guessing game similar to the pre-Obito masked man identity, i.e. 'how can our heroes Sasuke and Naruto etc defeat this Incredibly powerful and smart fighter', which has worked in the east so to speak towards the more non eastern region of the world this hasn't worked so well.
the tools aren't going to be a direct cause of his defeat but will definitely play a role towards the end
Kishi already has the story of how Madara is to be defeated, and the only fair way to call it , is to stick with the story, and not your imagination on how it will run
Plot and Asspulls can be said about every manga and anime, for further proof just bring a cynical person to read your favourite story and to pick apart ''convenient'' moments, and argue your case, by that logic you lose, every....single....time