It's not clear to me that what they describe as being a "worse" diet is actually worse.
If I make a roast chicken dinner, not breast but full fat chicken, chuck some butter in the mashed potatoes, salt up the broccoli/carrots etc, it's still significantly lower in calories and higher in nutrients than lots of things people eat today.
It sounds to me that their "conventional wisdom" is more like, well, veganism or something. Milk, butter, cream, great.
Lard is a bit more marginal, sure. But I'd still rather eat lard than random seed oil deep fried whatever.
If I make a roast chicken dinner, not breast but full fat chicken, chuck some butter in the mashed potatoes, salt up the broccoli/carrots etc, it's still significantly lower in calories and higher in nutrients than lots of things people eat today.
It sounds to me that their "conventional wisdom" is more like, well, veganism or something. Milk, butter, cream, great.
Lard is a bit more marginal, sure. But I'd still rather eat lard than random seed oil deep fried whatever.