Just do some research on what seed oils where used for just some decades ago, and the extreme processes they go through to make them somewhat edible and not too unpalatable. It's just a byproduct of corporations trying to reduce costs at the expense of our health. They'd do it with literal shit if they could find the way.
>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.
Find me one where it debunks saturated fat does not contribute, and has not been funded by the relevant industry. No study in history is free of confounding factors, because we are talking about people.
There is enough research linking saturated fat (beef tallow has a lot) to heart disease. Not saying seed oils are better. But claiming beef tallow is better doesn't cut it.