Defiant. Aluminum will not break down on its own. It may deteriorate but it would be better to recycle. Whomever cast this can aside was defiant of the need to care for creation. And, in a more subtle way to characterize the photo as defiant, it reminds of the day when Coca Cola thought it needed a new taste, a new flavor. The outcry for “classic” Coke would make that an apparent mistake.
Enjoy.