try fermented soy products. ill take tempeh over tofu anyday.
most of the "toxic" awareness with soy is not so much involved with the bean itself, but its manufacturing process. producing soy protein isolates is often done with very toxic chemicals, and its virtually impossible to produce a 100% clean product. for seperating fats and proteins, oils and solids, fibers and digestible plant matter, etc, fda always allows for something like 0.1% ppm of some toxic agent used to perform whatever respective chemical process. heck, same for the amount of rat shit allowed into milk chocolate for that matter.
for example, one big problem with HFCS is that its usually produced under very toxic conditions, and the chemicals find their way into food products. same happens with industrial level manufacture of soy proteins, tofu products or other bean curds, prepackaged hummus, textured vegetable proteins, most "vegan meat" products, etc. heck even nutritional yeast has a bad rep for containing factory particulate matter in it.
you could buy organic, but then its up to you to do the homework to find out if the respective corporation actually adheres to organic standards (and unless it states 100% organic, its usually understood that most of the process in producing the product is organic, but some phases in its production may not be).
or, you could invest ina food processor/dehydrator/canner/fermenting equipment/sprouters/juicers/bacterial culture manufacturing equip/etc and whatever respective tools you need to make whatever food product you want and do it yourself. i do it all the time, its cheap and easy once you get the hang of it (my sprouted raw hummus with dehydrated raw flax crackers and fermented kefir juices would blow your mind).
also, ALL plants contain something toxic. heck, even green tea has hydrocarbons which can cause cancer. apple skins have a large dose of phytonutrients which also come with a small dose of toxic alkaloids. read up on nightshades like tomatoes and eggplants sometime, they cause quite a bit of toxic chemistry in our bodies. the human body is designed to work around these things, and extract nutritional content while protecting itself from potentially harmful elements in the food. this works jsut fine on an all natural, mostly raw, organic diet. it doesnt work so well when the body is bombarded with all the exponential levels of toxins which come along with modernized industrial food production.