Because folks take issue with her fans.
Unlike that other fanbase (the one with X in the name)-they went after MANAGEMENT not other fanbases.
They got in Dan's face many times. They went after who was the source of the problem.
As did Cass fans.
Because it was not Babs fans who edited both of them out of books including LIl Gotham & Batwing. That was management.
Yet Teenage Mutant Ninja Turtles has no issue with. Nor Green Lantern, Flash (before New 52) and Transformers.You can't have Duke and Tim in the same story without some clone syndrome showing up.
You can write different personalities for each one.
And no appearing in 7-10 issues of over 30+ Batman Rebirth related books is not a push. That is tokenism.