I think you've explained your belief. But a definition of art that dismisses Michelangelo, Da Vinci, et al. seems unlikely to resonate with many artists, art hi

I think you've explained your belief. But a definition of art that dismisses Michelangelo, Da Vinci, et al. seems unlikely to resonate with many artists, art historians, or art galleries/museums. On the music side, we'd have to dismiss The Beatles, Bach, Mozart, and probably most of the greatest composers and musicians of all time.