Originally Posted by
Holt
One of those scoopers did say there was a moment that could conceivably point to history being changed and explain some changed/inconsistencies in the DCEU, but that it's not really addressed in the film itself. Like others have already said though, if she's operating out in public in costume, then it's pretty clear they don't really care all that much about slavishly retaining the continuity anyway, which is honestly fine.
Not really. After the initial slate of movies didn't get the reception the studio was hoping for, it seems they decided to just go with what was gonna work better regardless of whether or not it had to be attached to the same canon. Which was smart; Joker is now on track to be their second biggest hit and has already outgrossed every DCEU movie that isn't Aquaman.