It is an interesting idea. I am distracted by the fact that the photographer obviously saw "a cool thing" and shot it, which is really my problem and not yours.
I think it almost works? It feels too open, the shadow is too separated from the bench, and there's too much else going on to really cohere as geometry, which strikes me as the idea here. I like the bench (although, it's just a bench, and there are a million just like it, it's a strong subject always). I like the shadow of the bench, and I like the idea of juxtaposing them with some context.
I'd rate this as a "pretty good" execution of an excellent idea.