Slobodan, I think the photo is really about the foreground stump and the city lights, with the related hues and contrasting ideas.
The middle distance stump.. well, it's THERE and if you've ever tried removing a stump you know it's a job and a half! I happen to think it balances the frame nicely, fitting into the crook for the foreground stump nicely and filling what would otherwise be too much negative space (I think -- I haven't got one of those fancy context aware fill things to check). Also, it conceals the lights a little more, which is a good thing I think. The lights need to be there, but subtly.
That's my take on it. The actual photographer is probably thinking 'what a pile of ...' right now!