Dutch Courage?

More signs of the  steady demise of coherent English came during the recent soccer World Cup. How many times did commentators use the words "dutch courage"? I lost count, but not one of them seems to have noted that the  phrase is actually an insult meaning someone incapable of bravery unless fortified by drink! Then again looking at the beserker mood the Dutch played in during the final, perhaps I am missing something.