Who is actually demanding this fad? What's wrong with the natural way of eating?
But priority 0 remains quality of life. If fungi are not as liked as natural meat, what we need is sustainable meat, not sustainable other.
Quality of life now means beef. When beef will not be available, this crap will make sense.
There are groups around the world that eat vastly different diets than a typical westerner diet. Including ones that are vegetarian, and have been for a lot longer than you might expect.
Anyway, soy sauce is something that people _added_ to their diet. The article is about _substituting_ an important part of the diet.