Media baiting paper title.

What they believe they found was that lineolic acid caused liver disease:

"The degree of histopathological abnormality correlated with the linoleic acid content of fat in the diet (tallow 0.7%, lard 2.5%, corn oil 56.6%). We postulate that linoleic acid facilitates development of ALD and provides an explanation for our previous epidemiological observations."

I.e. they believe that beef fat has no protective function, it's just neutral. I only read abstract, so maybe paper has something different to say.