All in the name of trying to do this one universe shyt. They had multiple universes for years in the media and was fine. Trying to copy the one universe for all characters shyt Marvel is doing doesn't have to be the standard. Hell, Even the MCU has shown multiple concurrent universes now.
Are they going to integrate The Batman somehow or leave that in it's own parallel universe? I'd rather them leave that version in it's own universe so we can have different stories told from different perspectives and you can still have other DC characters or different interpretations in those as well!
Gunn betta not lay an egg.