Sorry, I guess I may have missed the point.
I am still not sure but you seem to be referring to stress here.
If that is the case, I do agree stress can be used to manipulate the plant, AKA elicit an immune response in hopes of increasing cannabinoid production.
Although I do not feel calcium stress is the way to achieve that goal, I do thinks stress has great benefits.
Also if stressed plants are lacking in calcium, that can cause more undesired issues.
Proper calcium levels are very important if you plant to stress your plants even by just trimming leaves off of it.
Here is a bit more of the how and why if you are interested.