I don't understand the criticism of Whitlock's article.
I know he's a polarizing figure and I think that colors some of the opinions of his work here.
I'm not a big Whitlock fan either and I think he states the obvious and isn't a very good writer but nothing he writes here seems inaccurate to me excepting the issue that Dorkington brings up which has been debated for decades:
Is the violence in society a reaction or a reflection of our media?
Does our love of movies like Reservoir Dogs, Pulp Fiction, Good Fellas, etc have an effect in making some individuals more violent? Personally I don't think there's any question of that. It hasn't made me more violent but I'm not every person in society.