It was a business decision. The movie screenings were not going well, which I can say based on what I’ve read up on it.
There was no way WB could recoupe its losses, no matter how often they showed it on late night tv forever more.
They are prepared to go forward with Flash, with that mentally ill Ezra, so that should tell you what WB thought how Batgirl would perform.
They would have a much better show if the made one about CATWOMAN..................
I recently watched ‘Black Adam’, and will admit....it was one of the worst script pieces I’ve seen in 30 years of DC (even worse than Green Lantern). So this chatter of Batgirl being awful...it probably is the same script people who did the Black Adam crap.
One part of me tends to think that they knew on the first day of filming Batgirl....it was a crappy script/idea. Far as I can tell...it will never be released.