It matters, because if you aren't careful you'll jump to the wrong conclusion (such as thinking that capital was destroyed, when in fact no capital was destroyed at all). Resources can be bought with money. Someone who has money can be thought of having resources. However convenient this simplification may be, it's not true that money is itself a resource. And this is especially important to bear in mind when we're assessing the amount of resources in the economy (in order to figure out if any resources were in fact destroyed). Counting money as a resource is an accounting error known as double counting, which occurs when the same thing is counted twice.