The problem with shock value is that it only has value if its actually shocking.

Obviously whether or not a person finds something shocking, or just thinks its a worn out trope, is something that is going to depend on the individual and what they have read/watched, particularly recently. If you keep reading the same type of books where you can predict the general idea of what's going to happen easily, then you're not really going to be shocked by it after a certain point, and the books will becomes a lot less interesting.