I read Dragon Warrior: Dai's Great Adventure manga few years ago. I will be disappointed if kishi chose to have the same scenario as that story, where the villain has two bodies: an old one and a younger one ( ie, two madaras)
1- do you have the link where he said that?well to losers are still losers so i dont see why it matters also kishi said madara is not final villian so i doubt tobi is madara and edo madara will be sealed at some point probably