While you have a point, of course, comparing Oreos to apples doesn't really work. True, there are a million different varieties of Oreos nowadays, but there is one single variety that everyone automatically THINKS of when they think of an Oreo, and that's the variety with the white filling. That was the original, and all the other types are variations of it. (There's even a song about it - 'The White Stuff'. This is true; I'm not making it up.) Apples, on the other hand, have a great deal of natural color variation, hundreds if not thousands of different varieties, including types that differ from country to country - basically, everybody has a different mental picture of what color an apple is. (Mine is a sort of yellowish color.) So while of COURSE the whole thing is stupid, the 'apples' metaphor strikes me as a good deal stupider than the 'Oreos' one.