No, we do not know.
You do not have to be worried when large parts of our fruit juice is apple juice, since apple juice is not a terrible choice when drinking processed fruit juice. Also, champagne not really made in the region, is not the biggest problem.
What is a problem, is plastics and pesticides and antibiotics and hidden sugars.
The food manufacturers spend a lot on marketing to make sure consumers increase packaged food as a percentage of their total food intake (reducing fruits and vegetables from the greengrocer and real meat from the butcher…. versus meat products and ready meals). Packaged food provide comfort.
As consumers we simply assume our packaged food is real food. But not all packaged food is quality food. It is manufactured this way, because it is cheaper, lasts longer and/or tastes better (people love sugar, salt and fat). We buy these products at branded grocery stores, often with well-known brands on the packaging. We assume a brand will not risk the scandal of selling food that contains ingredients, the average consumer has no interest in digesting. The manufacturers assume the average consumer will never read the small details on the back of the packaging: and they are right. Most of us have no idea.