Background, I have a soy allergy and I'm looking to eat less meat or possibly go vegetarian. I came across this article that includes tempeh, an item made with soybeans even by its own description.
It really is crazy that you can have venture capitalists operate at a loss for a decade just to change the entire infrastructure of society to be dependent on them in the future. Really undermines any kind of microeconomic common sense that is supposedly the basis of capitalism.
Not defending your friend, but I think part of it is the association with highly processed foods.
I developed a soy allergy, and I was shocked to learn how much it's restricted my diet. In two years I've found one brand of hot dog buns I can eat. If you you look at almost any fast food restaurants allergen menu you will see soy in almost every single item. Mayo is a effectively whipped soybean oil.
I don't think it's a conspiracy, but it's a cheap additive and seems to have some preservative quality, and a good indication that you're food is highly processed. I eat much healthier now, largely against my will.