Grain fed meat is totaly different than grass fed meat.

Grain fed animals have very high saturated fat amount compared to grass fed ones.

Grass fed animals and wild boars and wild cattle have much more PUFAs than grain fed ones.

So the quality of meat went down drasticaly in the last 100 years.

Which is ironic since many carnivores are screaming "PUFA bad" in a reductionist fashion and at the same time say you "must eat only grass fed animals" lol.