Summary: Our industry is full of people who have opinions. Nothing is wrong with that. In advertising, if you do not know how to state an opinion, or give a piece of your mind, then you are probably not going to last long.
However, the issue being raised here is the rise of the troll in advertising. The cop-out of staying anonymous while trashing someone’s work, or attacking someone personally, has gotten out of control. The way we craft messages is both analytical and creative, and that way has been attacked by many John Doe know-it-alls who refuse to back up their comments with their identity.