I think it's a perfectly valid observation if an article that purports to talk about the problems faced by girls ends up talking about problems shared by both sexes (especially if by doing so there's a hidden implication that boys don't have those problems). Parent's example wasn't cherry picked, the whole article is like that - you can substitute 'teen' for 'girl' in almost every sentence. I know that young girls have problems unique to their sex - why not talk more about them? My intellectual curiosity is not very gratified by this article.