What about the (other) elephant in the room: Injuries

From what I’ve read in other threads, I’ve been led to conclude that injuries don’t matter, all that matters is next man up, and that every Saints player on the roster at a given position is supposed to have the exact same level of talent to the point of basically being indistinguishable from each other aside from number on the chest and face under the helmet. A player replacing a starter and not being as good as the starter is outside of the standards of greatness expected of the team and thus completely unacceptable. Talent is not innate and observable, it’s permeable from the training facility walls borne of the ghosts of retired Saints past (2006-2020 only) and all any player has to do to be great is to remember that a fan somewhere has standards.