The point was supposed to be an example of a possible consequence of rules like this. Not a specific example of an actual consequence. Your comment also sugges

The point was supposed to be an example of a possible consequence of rules like this. Not a specific example of an actual consequence. Your comment also suggests the same solution for the bread. If you don't like that there is sesame in it then you should build a robot to remove the sesames. That's the same as saying "I didn't translate my text for you but you can find some other way to get it translated".