Nobody puts labels like this on products unless they (1) respond to a regulatory requirement or (2) convey something positive about the product. In both cases, the label implies there's something wrong with products containing genes that aren't "strictly Copyright (C) Mother Nature".

You may think the only issue the ethical problem of enforcing genetic IPR, but casual consumers do not give a shit about IPR ethics. They assume "genetically modified" is in approximately the same category as "contains toxic herbicides".

Ironically, the most commercially viable way to produce non-GMO crops are toxic herbicides.