These new age theories have a strong influence to strain people psychologically from using meat and dairy products in their food diet. Oh wait. Where I've heard these words before? Is this what the 4-th industrial revolution promoting right now? Abolish meat consumption altogether because it's bad? I'm sure they'll come up with something against boiled chicken eggs consumption too. Soylent green anyone?
If you're primarily refering to Evolution theory, it's definitely linked to food control and moreover, perception control - controlling how humans perceive themselves.
Humans are clearly not just any animal. Through Evolution, many have mentally reduced themselves to believe they're a talking herbivore. Well, even monkeys eat meat, but don't tell them that.
I don't think the controllers seek to *abolish* animal consumption, because it's not a practical move.
Humans that are deprived of animal food will grow weaker. A few years are enough to develop mental issues and become vulnerable to disease, especially in cold climates. The malnourishment is real, and no human can be vegan for years without cheating. Some may claim they do not cheat for years, but that's technically impossible and all vegans eventually break.
Society will not function without sufficiently available animal protein.
While the ones who work jobs that are mental and not physical may pull it off, it's virtually not possible for workers to efficiently do day-to-day physical work without animal protein (long term).
As much as we think we're advanced, all countries are heavily relied on physical labor for economy.
Abolishing meat will also damage the elites. Remember, not all elites sit in the secret ivory tower. All the top executives, governors and millionairs would suffer the same consequences, leading to an inefficient management of society.
Instead, the elites seek more intense control over the market. Targeting the independent and home growers first.
The method is still the same, convincing people to give up meat. If it will be taken by force, people will only crave it more. By making humans willingly give it up, they create better submission and stronger humiliation of humans, it creates balance for them.
Balance, is when a person born to an advanced society, has money and access to the best food, but instead of being happy and proud of it, he chooses to be ashamed and malnourish himself.
That, is their real victory...
Remember that in 90's-00's we had the vegeterianism trend. Passed like the wind, changed form.