Its not the protein that matters, high quality or not. Even the little protein we should eat every day needs to be of balanced aminos. Without that you're still sick. Thats why soaking grains and nuts first is so much better. Another reason why its tofu, miso, natto, even tamari that asians eat-not just cooked soybeans.
Aminos are the building blocks of proteins. Americas fascination with high protein has its dramatic effects as well(girls reaching puberty sooner, multiple sexual organs in men and women). Australia food labels don't just say the protein content, they also report the essential amino concentration.