Interesting! (Though I don't agree)
Graphics a 6, sound a 6, concept an 8. Your voice acting could be better though i know it IS hard. Your style is quite good, even though you draw with a mouse.
About your point, though: a sunset in my view is NOT art. What we admire when we admire art is the ability of the artist to picture an end result in hir mind and then make the piece approach that result in a masterful way. In short, we admire the plan behind the piece and the ability to carry out that plan.
There is no plan behind a sunset, or behind a tree. At least, I don't believe there is. They are put together by random events: clouds, water vapour, a sun spinning in the universe. Or leaves, and then soil, and the wind. We can find theend result beautiful, but they are not art. There is no mastermind behind the result.
Now make something that continues your thoughts!