Comment by Funes-

>There is enough research linking saturated fat (beef tallow has a lot) to heart disease

Find me one where saturated fat is isolated from every confounding factor. There is none. They are epidemiological studies linking saturated fat from junk food (itself mostly comprised of processed carbs with a myriad of artificial ingredients) to heart disease. That's akin to claiming that dairy protein alone is bad for health because almost every junk dessert has some form of dairy in it as an ingredient.