I keep saying it.
Meat makes you strong. They don't want you to eat meat because they're too feeble to rule a healthy populace.
Corn and beans can keep a peasant alive. Barely. Much of the historical peasant demeanour is the result of overconsumption of grains. That historical demeanour is what they want for you.
N.B. there is no such thing as overconsumption of meat, any more than cows can overconsume grass.