Journalism isn't a profession. Even nurses and some managerial employees are held to a higher standard of duty. You will have an easier time holding someone who is responsible for fixing ice cream machines to an objective standard of professionalism than you will a journalist.

Some journalists have tried to conjure up "professional standards" that aren't binding, but the fact that they are not binding is why it's not a profession and why those "standards" are just suggestions. Unfortunately, the accumulated cruft of decades of wrongly decided cases grants this pseudo-profession many special rights and no formal duties to counterbalance those.