I have seen this image - and its claim - dozens of times over the last year. I have yet to find a reliable source of its authenticity.
This is a test, done here on Earth, under optimal conditions, not an actual impact in space.
"An anonymous user on Reddit, who apparently works in the aerospace field, posted an image of what a 1/2oz of space debris can do to a block of solid aluminum. This test was done by a light-gas gun in close quarters and shows how much damage even a tiny amount of space debris can do: "
The article referenced states that the damage was done by an object the size and weight of a pencil eraser. It may be the size of a pencil eraser but at 0.5 oz or 14.2 grams its mass is close to a 0.45 ACP (automatic colt pistol) bullet at 15 grams. Bang.