Broski just for the sake of correct information, soy monoculture is largely used to fed cows and other intensive farmed animals. Humans consume a fraction of what's produced.
Actual vegans have a varied diet, consisting of legumes, cereals, fruit, veggies and so on, aka what a normal guy would eat, less the meat and derivatives of animal product.
What you are referring to, are the hipster vegans, the ones ordering a soy latte at a Starbucks, consuming tons of ogm soy in coconut oil drizzled burgers with avocado slices.
We do not want those people among us.