I guess quality control for food in the United States is so bad that you can never have confidence in anything you eat, huh.
Also, don't assume what food I ingest. My confidence comes with the asterisk that I already know what to avoid. Though my limited food choice is more due to the fact that I'm a carnivore, so I only buy the best quality of raw meat I can find (and other unprocessed products of animal origin) and cook it myself.
In terms of food quality, I could only do better if I move to the countryside and raise my own livestock.
And before you say "But animal products also contain arsenic!", sure, but it's in even lower quantities than typical produce. At least in first world countries, where the regulations are strict.
Remember, it's not the presence of a substance that determines its danger, but how much of it you're exposed to.
What I mean by "Rat poison is never added stealthily to food, so I'm confident I'll never ingest it." is that I'm confident that the dose of
any potentially harmful substance won't be high enough to be considered "poison".
The issue with soy is that since it's considered "mostly safe" by the regulatory bodies, there's no legal upper limit to how much a manufacturer can add.
And with potentially adverse effects from prolonged intake of soy being
somewhat researched... The science isn't one-sided (
since I know for a fact some of the studies claiming "soy is good for you" were funded by entities that are trying to promote soy, but that's another topic), but it's better to avoid it entirely just to be safe.