Despite all its evil, the Taliban actually punishes this practice. Without trial, of course, and they generally kill the offenders and ostracize the boy victims (they'd stone and kill the girl victims).
There is no word to describe Afghanistan. Complicated barely touches it. Neighborhood blocks hate the next neighborhood block. There is no respectable court system, never mind one law that covers adjoining towns. It's family clan vs. family clan ... and each clan has a different culture, different rules, different punishment for crossing those rules. It's not just dictated by religion, because the religion is so convoluted over the centuries, each family/neighborhood/tribe interprets it as they wish. One might despise the "without beard boy" practice (I think that's the western name); others look the other way or even celebrate it.
Whatever our military accomplishes there, will be wiped out the moment we leave. I really hope I'm wrong.