The late Robert Ressler (rest in peace) was another one who espoused this theory in regards to similar cases driven by sick fantasies and the need for control and power (which was mentioned in the most recent presser).
I think it a bit harsh for you to say you think I'm "jumping to conclusions that this was premeditated AND sexually motiated with really no factual grounds."
I am not jumping to conclusions but merely presenting the known facts and what the lead to according to eminent profilers and good common sense. It is extremely rare for a man in this situation to just want to kill someone in broad daylight, then leave, well, that's done and dusted. There had to be a reason for the perp to do what he did, and the motive was sexual assault and then killing. One of the reasons LE is keeping details of the girls' deaths and manner in which they were found show there are psycho-sexual tones to their murders. Anytime a killer strips the clothing from their victim and leaves them naked or half-naked, it implies sexual assault if not sexual debasement.