It doesn't matter why is exists, and even if we believe the stuck-at-13-years simpleton you're quoting, an explanation is not an excuse.
Actually, BTW, I have read (but not looked up myself) that if we count prison rape, men actually experience more sexual violence than women, so that part of the above formulation should perhaps be changed. And in terms of child abuse including to the point of murder, women perpetrate more of it than men do, so there is some value in looking at these issues from the point of view of "strong vs. weak + opportunity" biology rather than "gender".
But you are correct, violence between humans is for the most part a very bad thing, and I too would like to see it reduced as quickly as possible regardless of the cause.
I do think evo-psych tells us a lot more about human nature than we sometimes want to admit.