You might be right but what I've read of nutrition is that taking supplements is thought to be quite different than eating a whole food. Taking Vitamin C tablets is different than eating an orange because of all the other things that are in an orange. Or what's in spinach or kale or blueberries or sardines. I think that's the point she's making.
https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-h...