I'm surious about you saying, "The pendulum is about to swing wildly back in the other direction." Since the pendulum is way on the side of protein and fats are good, and carbohydrates are bad, and it's been that way for more than 15 years, you are saying it will swing to the opposite?
None of the macronutrients are bad. Proteins, fats, and carbs are all important.
However, you must choose clean, least pesticide ridden, least feed lot style grown, plants and animals from which to create your body. You can’t keep any sort of health on processed frankenfoods.
Do you disagree with the premise of your own OP? It appears that you do.
“Are you saying that animal protein and fat have been unfairly maligned, that idea went out of favor a long time ago. “
The science may not support it, but the government still does. Many doctors will still tell you to go on a low fat diet and take medicine if your cholesterol is too high...with too high being a figure that seems to get lower all the time.
“KEY RECOMMENDATIONS
Consume less than 10 percent of calories from saturated fatty acids and less than 300 mg/day of cholesterol, and keep trans fatty acid consumption as low as possible.
Keep total fat intake between 20 to 35 percent of calories, with most fats coming from sources of polyunsaturated and monounsaturated fatty acids, such as fish, nuts, and vegetable oils.
When selecting and preparing meat, poultry, dry beans, and milk or milk products, make choices that are lean, low-fat, or fat-free.
Limit intake of fats and oils high in saturated and/or trans fatty acids, and choose products low in such fats and oils.
Consume less than 300 mg per day of dietary cholesterol.”
http://www.health.gov/dietaryguidelines/dga2005/document/html/chapter6.htm
“The Dietary Guidelines for Americans describe a healthy diet as one that:
• Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products;
• Includes lean meats, poultry, fish, beans, eggs, and nuts; and
• Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.
The recommendations in the Dietary Guidelines and in MyPlate are for the general public over 2 years of age.”
http://www.choosemyplate.gov/dietary-guidelines.html
If you trust the US Government, you’ll never touch butter or bacon again...but I’ve lost weight and lowered my blood pressure more than my medicine did by eating both.