Because there is plenty of evidence that saturated fats are much better than the polyunsaturated fats that will be replacing them in this arrangement.
Because people are tired of the "food science"-agriculture-industrial complex selling them magic bullets to a health epidemic of our own making than end up just getting more people obese every time.
Because nutrition is one of the most fraudulent sciences at present, and no one can agree on which 90% of the literature is wrong.
Because the last 70 times articles in popular nutrition were published beginning with "This could be the holy grail to ..." they were wrong.
> Saturated fats convert to cholesterol, high values of which is a common health problem.
High blood cholesterol levels is a common health problem, but it doesn't follow that consuming too much cholesterol causes high blood cholesterol levels—it could be that the body can normally handle any amount of cholesterol/cholesterol precursor consumption within a wide range, but a dysfunction in the regulation mechanism results in health problems. And in fact, double-blind trials seem to support this theory:
"Evidence from observational studies conducted in several countries generally does not indicate a significant association [of dietary cholesterol] with cardiovascular disease risk."
> An appeal to nature fallacy
The theory of natural selection predicts that human metabolism is best adapted to consuming food similar to what was available for most of our evolutionary history.
GP said nothing about dietary cholesterol. It's well researched that high levels of saturated fats increases blood cholesterol, though. The conversion is dietary saturated fat to blood serum cholesterol.
Doesn't sound healthy at all.