The Christian Science Monitor calls it a FILLER because it is a FILLER.
You are wrong. You don't even understand what it is you are arguing about.
http://en.wikipedia.org/wiki/Pink_slime
At the end of the process, the beef is at least 90 percent lean. It is used in meat supplies across the U.S. It rarely comprises more than 25 percent of the final meat product that consumers purchase and eat
A 2008 Washington Post article suggested that the pink slime content of most beef patties containing the substance approaches 25%.
It's called a filler because it is a FILLER.
OMG that Wikipedia. ABC or someone who watched their reports or any other activist who has access to the internet, fed that in.
It’s beef. Cow muscle.