They are or are making themselves seem incompetent technically (difference is irrelevant in this case), but legally they are very competent and they know exactl

They are or are making themselves seem incompetent technically (difference is irrelevant in this case), but legally they are very competent and they know exactly what they're doing. This type of sharing is a given, whether intentional or not. In fact, using the backdoored OS for other cases, in other organizations, and for other purposes is their primary objective here. The murder cases are simply a cover they can pander to the idiot masses willing to believe such stupidities. That's why they're calling them 'terrorism' when every single other mass shooting does not get that label nor this level of 'investigation.' To get this backdoored OS to the CIA, NSA, and other objectionable organizations is the objective. Chinese, probably not. But it'll still get into their hands, that's guaranteed.