A lot of tin-foil-hatted Snyder fans are taking this, and the recent reveal that Batfleck will be in Aquaman 2, as a sign that WBD is working to restore the Snyderverse, since Batgirl would've featured Michael Keaton Batman in a post-Flash DCEU.
Either way, I feel bad for everyone who worked on Batgirl, even if the film didn't receive good reviews from test screenings.
-Marc.