A person needs protein for brain development and thus critical thinking. Anyone who is recommending a low protein diet wants you compliant and easy to control.
“Protein is the second largest matter in the brain, second only to water, so it is important to nourish your brain with protein rich foods. Proteins help neurons within the brain communicate with each other through neurotransmitters that are made from amino acids.”
Elephants have larger brains than humans and they never eat meat protein.