I think it's a great story, badly reported (& turned into some sort of 'big brother' scare story) - the scientist said "could predict" - it's the same sort of physiological/ genetic predisposition as saying that possession of the BRCA1 gene makes you more likely to develop breast cancer - armed with that knowledge, you can choose whether to have surgery, more monitoring, or ignore it. The same with kids with deafness - we measure, treat and provide intervention to help their difficulties.
Surely, it's the same situation here: if we can target kids more likely to get into trouble due to their brain changes, and treat their diet, behaviour etc. BEFORE they become criminals, it will save money & make society better. In an ideal world, everyone would be loved & well fed, but before we get to that stage at least we can target interventions!