Which of these two is the bigger industry killing cancer?
Has to be Kyoani by process of elimination, since SHAFT is obviously saving anime.
The one that isn't saving it with Shinobu chan
Neither are particularly bad compared to Aniplex and A-1 at this point. For /a who seem to think they are the only two studios in existence I'd say SHAFT is marginally worse at this point if only because Kyoani at least seems to give somewhat of a damn about the animation quality of their show rather than just working some hack directors visual gimmicks to save money.
Mostly I just wish people would shut the fuck about both of them though and pay more attention to other studios output too.