I’ve discussed this matter in the past. I don’t want to derail the thread, so you can just read my comments here and here and here.
I’ll try not to assume the worst in this case (namely, Bruce Timm’s race/ethnicity compared to that of the makers of Batgirl). Perhaps they’re just not a fan of the film Birds of Prey, which shares a screenwriter with Batgirl. Or maybe they’re in denial about the greatness of Michael Keaton’s Batman. 