I've been a dietician for 16 years. A lot of my colleagues do develop educational resources to use either in the schools or with clients or with patients. Some resources will use the food guide as a basis of comparison.
For example, if a person is looking at the food guide for guidance, they say, okay, I need about x amount of fruit and vegetables. If that person is not eating this amount of fruit and vegetables, there is research out there, which I don't have on hand here, that shows that if you switch your pattern of eating, if you make changes to try to reach your goal in terms of vegetables and fruit, the rest of your diet would naturally change, because at some point there is a certain volume that we eat in a day, and you might end up eating less pastry because you're having fruit as a snack.
It can be used like that by many health professionals in the field who do develop resources and use it as a basis for their work.