Real jerks take advantage, (its a big part of what makes them jerks in the first place) they don't care about the law. The law is for suckers, saps, rubes or whatever. Predators do what they do regardless of the law, and above and beyond all common sense. What old guy really thinks that some 13 year old is dreaming of an old guy and not some super hot rock/TV/movie star much closer to their own age? Only an idiot. "Hi, I'm Chris Hanson."
That is why the death penalty for murder does not work. By the time you are ready to kill someone - and lets just say, that is really, really mad in both meanings of the world mad - you are way beyond thinking on a rational level about consequences down the line. That level of rational though is long gone long before you get to murder. When it gets to the moment where people are pulling out guns and loading them, any event horizon beyond the next few seconds disappears. So, those people who would seek that kind of advantage would not be put off by the law, or encouraged by no law.
For the most part, the pattern in these crimes tends toward very private settings where the perp can feel safe. That tends to rule out most very public settings where you can't control the people coming in or out (or the ingress and egress for the lit majors). That's why everyone still doubts the story of Joan Bennet Ramsey, its highly unlikely that anyone outside of the family would have taken her to another part of the house, they would have taken her out of the house - that's the pattern. So I doubt that you will see any sort of spike in this level of crime happening in public places like say,restaurants, bathhouses, massage parlors, mortuaries. BTW, I'm I the only person who finds the mention of bathouses and massage parlors odd? I would have thought locker rooms, or common shower spaces, I would have never thought of bathouses (a specific word which tends to be associated with a gay lifestyle) and massage parlors (and are you not mostly naked in a massage parlor anyway?) as the vector of crimes in line with the thinking here.
(PLEASE DON'T TELL THEM, that people in Japan bath naked in common all the time, and seem none the worse for it)