Increased red meat consumption is associated with a moderately elevated risk of cancer, but what counts as "red meat" varies. Processed meat with tons of additives and preservatives isn't the same as beef.

In any event, the headline of the study should be that polyunsaturated fat promotes fatty liver disease, because both lard and tallow (both mostly satured) did not promote it significantly, but lard has a bit more polyunsaturated fat than tallow, whereas corn oil is almost completely polyunsaturated.