Grappling with the Grapple

At the grocery store today, I came across a sign the said, "Enjoy New Fit Apple," or something similar. I paused to take a look, because I was curious. Apples are pretty nutritious all on their own. Had someone really come up with a way to make them even healthier?

The product in question was the Grapple. It's essentially an apple that's infused with natural and artificial flavors to taste like a grape. On their website, they claim the most commonly asked question about their product is "How do you do it?" That's not my question at all. My question is:

Why do it at all?

Are apples not sweet enough already? Is it just too hard to buy grapes? Both are sweet, both are portable, both are easy to find on grocery store shelves. Why on Earth are we injecting artificial flavors into our fruit so that they can taste like other kinds of fruit?

Am I just missing the boat here? I'm sure they're tasty, but still...