As others have already said, the game's content reflects its rating. Don't make it available to your kids unless you are fine with them seeing some naked butts and nipples.

Whether you like or dislike this type of scene in your game is personal preference.

I personally don't mind them on principle, but I do mind their current execution. The jerky animations and poor scene directing reminds me of the romance scenes in the Mass Effect series. It's just awkward to watch. Fade-to-black would certainly be an easier alternative, but if Larian is committed to having them, I hope they will receive a lot more polish.