A complete and utter sham

McDonald's "Authentic French Croissant", McDonald's Vancouver, BC

Sign for McDonald's "Authentic French Croissant", McDonald's Vancouver, BC

What makes a food authentic? Country of origin? Ingredients? Recipe? 

What about a cheap, mass-produced croissant-shaped pastry is authentic? And most people would not say that this is the crescent shape that they expect.

I fail to see how anything about this is authentic.