A short version of a rather complicated answer is this: The game is ESRB M rated (PEGI 18+), however, they fully expect children ages 11-17 to be playing this game because their parents either don't care or don't have a clue what the game is. Additionally, the forums are for ages 13+ which is why they do not want sixual content mods being released here.
And now for my own opinion... TW2 is a crap game that treats women and portrays them as toys and/or six slaves. The game was developed in poor taste with only teen and young advlt males in mind. Yes, I am a woman, and yes I find the game extremely offensive. I don't want to see that kind of garbage in my favorite games. /opinion
Maybe narratives have to explain everything to kneejerk folks like this, but the whole parallel of the sorceress coven and the like was basically women's lib in a world much less civilized than ours. The sorceresses are the only ones in the TW2 world that understand things with science not superstition and they protect eachother from a world full of dirt eating pig farmer chauvinists. Show me anything dark but true to life like that in any gamesas or Bioware title. You can't. They're too busy with blue alien lisbians-that-are-really-hermaphroditic and with retconning the Blades.
TW2's very, very advlt. Everything is bad for everyone. Women are tortured with hot irons, blinded by gouging, assaulted and killed. SO ARE MEN. CDprojekt didn't flinch from showing that women are just as afffected by the moral corruption of that world as the men are. They didn't flinch from showing that girls like boys and occasionally like other girls, too. There's no equality, no social contract, no shared moral compass. The only thing that brings humans together is their racism against elves and dwarves.
You're comfortable with running people through with longswords as they beg for mercy but you're not comfortable with Triss Merigold having a comedic romance scene in a grotto with the man she's loved for years?
Your indignation is misplaced, miss. Skyrim has a long way to go before it approaches characters with real dimensionality like TW2.
So I have to reject your assertion that TW2 was aimed at teenagers. Skyrim is aimed at teens and people who can't handle a world where even the pretty princesses are real people too. Real people who might make bad choices and get their eyes removed by torturors only to be treated with scorn and cruelty even by the player hero. You should consider that when you're committing wholesale murder in bandit_cave_235 because some random facegenerated npc with the same voice as Farkas and every other growly beard walking around promised you a steel mace and you might find 60gold on a conspicuous table somewhere in a tunnel along the way. Bonus. Go nonlinearity, you can go any direction to find almost the exact same thing at a lower quality than if there had been one or two of those things that had all the love instead.
Which brings me to the thread topic. six mods for the TES games have always been immature affairs, mainly there to be "Poser3D pormography". Fallout 3 was terrible about this in particular. Nothing clever about any of the girl-flesh mods for any Bethesda title ever, and may never be. Even the underwear groping in Dragon Age 1 and 2 is more "Worthy" in terms of a story event than looping some erotic animations with a prosttute in Megaton.
If a six-including mod for Skyrim came about (People want to have simulated intimacy with stiff robots Well Farkas is kind of sixy...) then ideally it would have narrative justification. That won't happen and we all know it, though. It will be "prosttutes in bars" and it will be #3 download on skyrim nexus right behind more revealing armor for women and nvde skins for women. Just like Fallout.
Again, which games are played by horny teens and advlt children?