People intentionally and knowingly reading the ingredients / turning on DNT is the correct method.
I'm struggling to find a valid food-ingredient-analogy but it would be very different from your scenario. It would have to involve Microsoft auto-scanning the ingredients without the user ever turning this feature on. Then Microsoft would have to do something with the results that hurts/disparages certain food producers. And then the food producers would stop listing ingredients in a form that Microsoft can OCR, not lie about them.
I'm struggling to find a valid food-ingredient-analogy but it would be very different from your scenario. It would have to involve Microsoft auto-scanning the ingredients without the user ever turning this feature on. Then Microsoft would have to do something with the results that hurts/disparages certain food producers. And then the food producers would stop listing ingredients in a form that Microsoft can OCR, not lie about them.