Liam 
It’s canonical that Batman is just a weird guy in a suit. Cloth ears, mask, cape, no special powers at all. So what’s to stop competitor Batmans? When commissioner Gordon lights the Bat-signal who’s to know how many Batmans would rock up and then who authenticates the ‘real’ one?
Anꞇóin Ó B.Easiest solution is just having Bane snapping all of them like Kitkats and letting any of them that continue turning up monologuing about the superstitions and cowardice of criminals afterwards as _real enough_ Batsman.