First, I think you're misreading it. The Wikipedia article lists "mechanically separated meat" as one of the ingredients that are used in ultra-processed foods.

First, I think you're misreading it. The Wikipedia article lists "mechanically separated meat" as one of the ingredients that are used in ultra-processed foods. The other point is already covered by other replies. "Mechanically separated meat" is not a term for your mother's chicken salad remake of last Sunday's roast chicken.