On the other hand, if Bendis hadn't come along Cassie (who vanished when Rebirth started) and Conner (who was replaced by a new version in New 52 and therefore had been gone since Flashpoint) would've still not been around. I wonder also if Bart would've not returned in Flash #50? That was probably set up requested by Bendis too. Of the YJ4, only Tim had been getting a push, having been used in Detective Comics.
It's a trade off. He's damaged some characters but restored others. He also saved Supergirl from cancellation, as it relaunched to tie in to what he was doing in Superman.