alt Hacker News> a fact that vegetable proteins lack useful amino acids that meat has.
This isn't a problem since you only need nine essential amino acids and they are present in adequate quantity in various vegetables and shrooms. The others are synthesized by ones body.
Only if those vegetables or shrooms were grown in natural sunlight (no greenhouse plastic/glass involved) and in a soil with abundant minerals, macronutrients, and high brix value.