I think that when you have an idiot in the White House, the proper thing for respectable journalists to do is to report it to the American people. When the president says or does stupid shit, a responsible journalist will doggedly report it. That CNN is doing it every day only goes to show you the frequency with which Trump does and says stupid shit.
Spot on, sure Acosta is behaving in a trollish way because the bear easily lashes out when poked, but I don't fault him for exposing the disaster that is Trump. The ban is the cherry on top and the lawsuit is CNN calling Trump's bluff.