Yes it is. This is just a way to explore the character and how he got to the point of insanity.

If the movie wasn’t a stand alone, it would be hard to incorporate different elements of Batman’s history into it.

Anyways, glad you asked great question bro

‘Joker’ Filmed as Period Movie to Distance It From the DCEU.

Okay now is this just to Increase your points 😛 lol!