The only totalitarians in this thread are those like you who wish to have ultimate authority and control. If this legislation is so great, why are so many excused from compliance with it? How do you control those who ship in the cheap crops from Mexico and other countries with only their “promise” that it is not genetically modified? How many farms do you own south of the border?
Food allergies are a reasonable concern. There exist market mechanisms for those very purposes. You would buy from suppliers that will back up the claim of "allergy free," just as you see in "gluten free" food now. Nobody needed a ballot proposition for that. Or you would subscribe to a service that tests food suppliers for the antigen and backs up their testing with a suitable insurance policy.
Hell, it might not be long before we see an industry service for precisely such purposes in order to manage such a reasonable concern without charge for which there are similar precedents in other industries.