Soy is a strange pick at it’s mostly cultivated to feed livestock (77%) and using it instead for humans instead would require substantially less crops.
https://www.deforestationimportee.ecologie.gouv.fr/en/affect...
Agave… is mostly water and glucose, without much minerals or protein. How does vegs requires or tends toward that aliment more than other?
Quinoa original region doesn’t have the same working standards as un US/UE but I’m not aware of a difference with banana, coffee, avocado, cacao, vanilla, coconut, palm oil (or soy)… however Quinoa also grow in other regions: here in France you can find local quinoa at the same price as the one from Bolivia: around 8€/kg (organic). It’s super healthy but not very popular through.
Beans and lentils are more popular I think (self non-scientific estimation) but yeah soy is great and tasty.