The FDA's Generally Recognized As Safe (GRAS) standards are based on grandfathered-in regulations, and the safety of food additives like red dye is assessed at a single-serving dosage rather than cumulative or high-intake scenarios.

“think about generally recognized as safe okay let's just use red dye which they they just they just banned I know what red Dy three yeah and think about it though let's just any of these let's take any food D color okay you're only required to show if I make Froot Loops I'm only required to show that based off my label at that dosage it's safe but what I am not required to show is if a kid eats five time no a kid doesn't eat the little cup that they say you're eating they pour a big bowl of Lucky Charms”