Likewise, "companies must submit studies, and the FDA must approve them, before a genetic change may be added to a food" sounds equally reasonable and yet is labeled "zealotry" by folks like the parent poster.
As a matter of fact, the FDA is already one of 3 federal agencies in the US responsible for oversight of GMO:
FDA regulates food from GE crops in conjunction with the U.S. Department of Agriculture (USDA) and the Environmental Protection Agency (EPA). USDA's Animal and Plant Health Inspection Service is responsible for protecting agriculture from pests and disease, including making sure that all new GE plant varieties pose no pest risk to other plants. EPA regulates pesticides, including those bioengineered into food crops, to make sure that pesticides are safe for human and animal consumption and do not pose unreasonable risks of harm to human health or the environment.
What gets everyone all hot and bothered (myself included) is the erroneous perception that GMO are not regulated at all, or that they've been confirmed as unsafe for people or the environment despite all of the evidence being in opposition to that position. It is decidedly anti-science zealotry that prevents many from accepting that the scientists involved in developing and certifying GMO's have done their jobs, and done them well.