Check the video out - those aren't "manufactured" issues - the reality is that such devices can only perform a surface level check at best - and even then, telling close things apart gets challenging. If you think you can do better, please explain how such a device could work?
It's quite simple: Coca Cola, Crisps, Mars Bars, Bacon, White Bread ... all these things you assign a red. Broccoli, Carrots, Nuts and Beans get a green. Everything in between gets orange. Pretty much all meats and dairy will end up in the orange segment which will upset this very powerful sector. The pork guys want you eating pork at every meal if possible.
