Personally I find this movie disturbing and the boy disrespectful,but even so I think the writer was trying to put to notice what some parents don’t or do notice but choose to look away.
Instead of criticizing parent and parents to be or a single parent you have to take notice of the behavioral changes of your child
The writer may have gone too far with the choice of words in the script but if you don’t pay attention to your kids as a parent this won’t be a movie anymore it will a reality you have to let them and the people around them know that some things is not alright