Do you really believe in statistics?
Sweden is firmly in the top 5 for rape, although it is far from South Africa. The United States just recently got out of the top-10.
So your argument with statistics works exactly the opposite – the more society supports “moral freedom,” the more rape. You can now start arguing that the statistics are wrong, baby.
Statistics should work, you just need to understand what you are reading. The rates of rape are higher because there are more officially registered cases of rape. That is, in more civilized countries, such a crime is not hidden because of false shame, the victim is not afraid to contact the police.