Exploitation theory has been fundamental to leftism ever since Karl Marx. Without it, I can't see how leftism and right-libertarianism can be differentiated.
The only reason the Soviets didn't enforce an age of consent is primarily that Russia is a masculine culture, it's low on the list of priorities, and not become of some rational deduction. As we can see, Russia today, absent the Soviet government is still one of the world's largest producers of CP.