Jobar
Zen Hedonist
i don't really think it's moving the goalposts, i think it's simply that the links confirm what we all know - that power and dominance and violence and a host of other aberrant crap - plays a part in violent crime, but i don't see how that's unique or specific to cases involving sex.
in my (granted limited, i'm not criminal case worker nor member of a study group) experience with men who are sexually violent towards women, they're all about dominance and power tripping in every aspect of their lives, from sex down to getting to pick which donut they want from the box.
thus i don't think that showing that the two can or often does exist simultaneously within the same act proves that the one is the cause of the act in the first place.
I don't think it's unique or specific to cases involving sex. As you say, these are people who are about dominance and control in almost every aspect of their lives. I might be inclined to say that the need for dominance and control is the cause of all of their acts... including rape. Getting to pick their donut from the box isn't just because they want a donut - they want to dominate the selection and exert their power over everyone else. In that sense, it can seem to be a bit of 'misdirection' to say that their violence toward the donut-box-holder is due to their instinct to eat when hungry![]()

IMO the basic physiological fact that produces rape, is that males produce billions of gametes over their lifetimes, while females only produce a few thousand. This means that males often tend to spread their genes with little regard for the success of an individual offspring, but females have to be much more choosy, if they are to pass on their genetic heritage. Rape is a reproductive strategy sometimes adopted by males, from the simplest animals to the most complex.
While this may explain rape, it's certainly not meant to excuse it. You might look at it as something like parasitism- and who likes parasites? But unfortunately parasitism is also a successful survival strategy for many, many species.