Yes, debunked BUT it IS common practice for grocery stores and supermarkets to use a product euphemistically called 'dynamite' on meat that is past its expiration date and has also lost its color. The product makes the meat very bright red and US law allows the meat to be repackaged as 'family specials' and 'for bar-b-ques' etc. and basically put a new arbitrary expiration date on the new packaging.
Also, whenever you see chicken wrapped in big packages with a 'family' or 'cook-out' sticker and covered in herbs, that's because the herbs and spices and repackaging let them get around the law. I only know this because I have butchers and supermarket dept. managers in my family going back generations.
Don't even ask what they do in the seafood department.