If find also the Idea of allready starting with a Batman, who comes already out of retirement nd has been batman for over 20 years, when everybody else is just starting is kind of wired.
It is imo also really bad for Batman solo movies, either they make it like in TDKR were all the Batman characters and villains are much older then usual (Dick Grayson would have had to bee in his mid 30s), but then you don't really get the iconic version of them on the screen, or you just use the normal ages (like they did with Harley Quinn in Suicide Squad) but that's screws up that time, and raises the question why did go for the TDKR version of Batman in the first Place.