> any company pay to add massive amounts of chemicals to something to give it a taste that it has naturally?
Unless they plan on selling the juice just during harvest time, they need to store it. Try and store some juice you squeezed from oranges even in the refrigerator and see how long it will last and how it will taste. It will last some but not for 6 months.
Consistency. Tropicana tastes one way, others taste different. I don't know why you need any proof, products will change flavor after they are stored for a while.
> add massive amounts of chemicals to something to give it
I'll have to throw the "sauce, please" back at you here ;-) I don't see where in the article it says these flavor packs are massive. Flavor compounds if done right will not be massive. Have you ever added spices or vanilla to anything you cook or bake. How much of the total volume is it? It usually isn't much.
> No proof is provided of this assertion.
I think it is rather common sense that it would lose flavor, at best it would have a different / strange flavor.
> hardly something to feel alarm about.
Really, you don't have any idea why someone might be a slightly worried about this class of additives put into a popular food that gets to skirt by regulations based on "technical" language.