You haven't heard about such things because people, especially women, who are honest about such things get attacked. Despite the myths and wishes of some folks, children have plenty of curiosity about sex and get aroused. They used to call it "playing doctor" when multiple kids were involved and it was considered a normal stage of development. There is nothing wrong with kids being curious as long as no one is harmed. They should be taught that there are appropriate times and places for sexual exploration, but should never be made to feel ashamed about being curious or for their feelings of arousal or attraction.
Dunham did not harm anyone. In my opinion, the attacks are more about her openness and honesty about her past rather than the actual acts. I didn't read her book, but I doubt that she was bragging about her childhood experiences. She was probably trying to be honest so that others like her could feel less ashamed or embarrassed. She is breaking the female code of silence about her childhood sexual interests. It appears some women resent that she depicts women as being horny at times, which ruins the old myth that women don't desire sex and only do it to lure men into providing them with support and children. The other, more contemporary myth is that women can enjoy sex, but only in romantic situations with someone they love.
I think Girls is a funny show and I appreciate that she depicts taboo topics in an honest way at times. I like that she is willing to make herself and other women look bad, both visually (her body) and in their sometimes inconsiderate or delusional behavior.
I don't have much of an opinion of the Duggars largely because I have never seen the show. I don't think that having a large number of children is virtuous, it is a bit selfish if you don't adopt. It sounds like the acts of the 14 year old kid were not as harmless as Dunham's acts, and he was a teenager, not seven years old. It is not the type of thing that should be an issue now. I don't think he should be punished for it now that he is an adult. He should have been counseled and watched as a teenager (which may have happened, I don't know), but probably should not have been put into the criminal justice system which tends to do more harm than good (often for the victims also).
Here's a story on why I appreciate honesty about taboos, AKA "vulgarity": When I was in summer camp some kids were teasing another kid about masturbating at night. My friend was there and said "So what? Everybody masturbates, its completely normal. 99% per cent of all men do it. I enjoy it" That completely changed the tone of the conversation and probably saved the teased kid from feeling like a freak for the next several years. In fact, it probably saved all those kids from feeling weird about masturbating.
