We had a similar smaller mincer and as a child I saw cold roast meat minced up, probably for cottage pie.
A standing rib roast was a great favourite and one that is not usually made available now. It was made up of Sirloin or T Bone steaks in one piece.
The old rolled roast can't be good enough anymore or butchers have no time to prepare the roll which means using skewers and string to hold it together.
Our usual diets change over time. As well, Low Carb might ward off ubiquitous diabetes 2. Then, like most diets, it has its detractors.