I did come upon a part of the new book which really worried me, because it seemed to encourage extremely dangerous behavior that could be imitated by children reading the book, and I can just see news articles appearing about kids doing just that
Book 7 spoiler behind this:
In order for Harry to get the Griffindor sword, he must swim into an icy cold lake and retrieve it from the bottom. Because of the prophecy that only a true Griffindor (someone who is brave and not afraid to die) can take the sword, Harry dives in…and nearly drowns in the process. I can just see kids standing around a frozen pond having a “I’m the truest Griffindor!” contest, until one of them either drowns or freezes to death"