"Knowing basic materials and techniques" can indeed be very helpful.
However knowing and utilising the Zone System as a "primary goal" does not coincide with "knowing basic materials and techniques" and nor is it necessary to understand or use the Zone System as a means to create negatives which meet one's own needs and wants.
the fact that the Zone System may be the means by which you have achieved your goals in this area - and, by the way, good for you in having done so - does not mean it is either the only way or the optimal way for all photographers.
However knowing and utilising the Zone System as a "primary goal" does not coincide with "knowing basic materials and techniques" and nor is it necessary to understand or use the Zone System as a means to create negatives which meet one's own needs and wants.
the fact that the Zone System may be the means by which you have achieved your goals in this area - and, by the way, good for you in having done so - does not mean it is either the only way or the optimal way for all photographers.