They Tell Us to Recycle

The headline here caught my eye, "The Perils of Regifting"...so I guess it's wrong? What if you haven't actually used the item? What if it's still in the original wrapping? What if you really don't want it and you're just going to throw it away? What if you're in a hurry and don't have the time to get to a store? What if no one will ever know?