I don't disagree with your points, but i would point out that better research in agri-science and more competitive markets has led to more issues in the supply

I don't disagree with your points, but i would point out that better research in agri-science and more competitive markets has led to more issues in the supply chain. Are the heavy metals left from the nutes killing anyone? Not at the rate Vitamin E is, but do know they are harmful. People put scent agents on flower(ive heard of pixie sticks being used to add "grape/berry" scent), as well as other chemicals to make it appear a certain way. These things were probably not happening in the 60. So we don't know the real long term dangers because these issues havent been around long enough.