Consider what it would take to guarantee that there are absolutely no insect parts in a given volume of food. Insects are everywhere, and it's almost impossible

Consider what it would take to guarantee that there are absolutely no insect parts in a given volume of food. Insects are everywhere, and it's almost impossible to eliminate them with total confidence from every step of the food supply chain. Even if it were possible, it would be incredibly expensive. Unless you want your yoghurt to cost $100 a pot, you have to accept that some insect parts will find their way into some food. The point of regulation is to ensure that the amount is minimized. If the standard was zero parts, food prices would skyrocket, many food suppliers would go out of business, and poor people wouldn't be able to eat. So the standard is some reasonable low level. These things are always about tradeoffs and not absolutes.