Agreed.  Some years back I recall a study comparing MRIs of teenagers' brains to those of mental patients.  They revealed striking similarities.  Coupled with what I suspect were turbulent/abusive formative years and the barrage of violence in various media, this event shouldn't be all that surprising.  

If young Mr. Henry is diagnosed with psychopathy his sentence is just . No cure.  Otherwise, at some point, it would be better to have him in the role of a remorseful, rehabilitated,  productive member of society vs. rotting in jail on the taxpayer dime.