Why is saturated fat so important?

There is a great summary by Drs. Eades, from one of their books and Dr. Mercola: has a referral to it "Reasons-to-Eat-More-Saturated-Fat" "A misguided fallacy that persists to this day is the belief that saturated fat will increase your risk of Heart disease and heart attacks. This is simply another myth that has been harming your health for the last 30 or 40 years."