Teen Fiction plots are becoming darker and starker

In the article "Teen Fiction Plots Are Darker and Starker," by William Porter is about YA fiction and how YA fiction topics are becoming more and more dark and explicit.  The author William Porter uses a lot of "loaded Words" such as anorexic, disfigurement along with other words which makes the reader envision very horrific things.  The author's word choice provokes very uncomfortable and horrific type of emotion in the reader.  These emotions must not bother the teens because the author says these books have "gained popularity." the books as they become more and more popular include more profanity.  The author's  main concern is "who are the gatekeepers?"  "Does anyone monitor what the kids read?" The author comes to the conclusion that the librarians don't limit the content that kids read, they simply "tell them where it is."