Exactly. You can't have a nutrition rating system for humans and not rate the skeletal muscle of cattle above pretty much everything else. Doesn't matter what one thinks about the meat industry, carbon production, and so forth; from a nutrition standpoint, beef has all the nutrition a human needs, humans are well adapted to consuming it, and hypotheses around cancer and heart disease never panned out.
And wow, what a bunch of poppycock that nutriscore that system is. I'd heard of it but never looked into it. It considers "high" saturated fat, or "high" salt, or "high" energy density as negatives.
Fat content too intense for my taste. You claim the debate on saturated fat is settled but that's not what pretty much every major health organization says. Big keto fan huh?
If the scale is A-F, that would put ground beef at about average which seems about right. Its a great source of protein and a good source of some vitamins and minerals, but is high in saturated fat and has a low amount of other vitamins and minerals.