If the article's description of how "pink slime" is made is accurate, I think calling it "ground beef" is a bit disingenuous. It's still "beef", but I think most people would agree that the term "ground beef" implies that the product was created by grinding up raw cuts of beef. "Separated beef" or "lean finely textured beef" or even just "lean beef" all seem like more appropriate names.

I think using "pink slime" as an aditive for ground beef should be fine as long as it is disclosed by the seller. Actually calling it "ground beef" is a step too far, though.

Next we'll start calling pizza a vegetable.

Wait no.