I dont agree, because his double life shows....he is cunning, deceptive, manipulative, researches his crimes (breaking into empty homes of young women) and follows an aspiration to maximise his sadistic sexual urges. I think he aspired to be a very dark persona....but his sadistic urge was too impulsive on the night in question, not considering CCTV etc and a backup plan. If he was a silly boy, he'd likely of crumbled at the first round of questioning.
Good point - I'd been wondering how he knew which houses to burgle if he wanted dildos/sex toys/knickers etc. He mustn't have just picked a house at random and been lucky... He must've known which houses were occupied by young women.
Though it seems stupid that he'd hit houses in the local area and even on his own street... That must be playing with fire unless he was so confident he could get away with it?