I agree with most of what you are saying.
But one HUGE difference between food crops and cannabis, genetic material. That genetic material matches to codes in our DNA, and those codes do things in our bodies. Depending where needed.
Tomato, is good for us as well, and can be used by our bodies for energy and repair.
But if you look at the amount of genetic material in both, you will come across major differences. These differences, I call the plant's brain.
This brain has developed over thousands of years, dating back to the origins of man, and possibly before? And yes, so have other plants. But this particular plant has much more of an intellect than we know. It has found ways to bind up to receptors in the brain and body of man, using man in a synergistic bond that no other plant can match!
Other plants have figured out how to use man to keep itself alive, but none do it even close.
And I know there are other plants that produce cannabinoids as well, but again not the same.
There are many medicinal plants in the world, each requires it's own special connection. That connection comes from the shaman in us. I'm not saying you and others don't have this gift, but not all do.