Article 1 was true under 1990s prices. But you can get two double cheeseburgers for about four bucks and there aren't many who are so poor they can't afford that.
First, the parent implies it decreased, not stayed the same.
Second, are you sure? Everything I can find indicates that the Big Mac slightly increased (and further, the "Big Mac index" is a meme, which may dampen increases for image reasons), and everything else on the menu, on average, increased even more than the Big Mac. Is my data bad?
