Sounds very similar to the "global warming" scam doesn't it? Anybody disagreeing with the agenda is shouted down and crushed. There are meteorologists who have had their careers destroyed simply because they refuted it (and had evidence to do so). Now most meterologists just keep their mouths shut, like good little sheep.
With regard to nutrition, I don't think there will ever be much traction on getting the medical community to admit they were wrong about high fat diets and that they have been killing us with this high-carb food pyramid nonsense. For that would open the door to trillions of dollars in malpractice claims.
Global-Warming/Climate-Change and the Food Pyramid are two of the three massive frauds that are being perpetrated on modern Western society.
The third is “Homosexuality is fabulous!”.
Ancel Keyes’ method was similar to that of the global warming / climate change crowd for sure. For example he was so well known that if someone were to publish research that went against his own the scientific journals would give him advance notice and he’d request, and get, permission to write an introduction to someone else s work that explains that it’s wrong, dangerous, and they are bad scientists, if you still want to read junk science you may now enjoy their paper. Then he’d reach out to those funding the research and get them blackballed. A guy who wrote a paper in the 70s saying sugar was bad and maybe the root cause of lots of disease got Keye’s (or maybe Keye’s handpicked successor who wielded similar power because of his long association with Keyes) upset in this way and he became unemployable because nobody after that would fund any of his research. He had to drop nutrition work altogether. Many other examples of vindictive behavior to stifle science for decades. Read the well researched book “Big Fat Surprise” for more details.