Until we know more this all premature, but if it's true - probably for the best. Leaving the films up to creators, letting them tell their own self-contained stories, and abandoning the idea of a DCEU is probably for the best, at least for a decade, seeing as how badly almost all of it turned out.
That was the worst Superman ever - in any medium - elseworlds or no, across those two films. This version of Batman was OK at times, but considered in his entirety one needs to remember that he was annihilating people with the Batwing and torturing helpless criminals. Joker and Lex Luthor are exquisitely awful. Lol Suicide Squad. Only Wonder Woman was genuinely good.
I'll take another Wonder Woman film with Jenkins and Gadot, and I'll check out Whedon's Batgirl unless the teaser drops and it looks like hot garbage. I'm not interested in anything else they're cooking up that I've read about. Perhaps Whedon can work some magic on JL and make me change my mind.