That's a pretty good definition, and by that definition, I agree with your assessment.

I was asking out of curiosity, by the way, because I myself don't have a good definition for art. It's rather an amorphous concept. I do think that my definition would differ somewhat from yours in that I would prefer my definition to include something about the ability of art to evoke a reaction in the observer. Of course, this also makes the classification of something as art far more subjective.