This question has been on my mind for years. I think that between aesthetic pleasure, individual taste, cultural relevance, creativity, innovation, applied skill, and any other variable artistic qualifier, music still has to be, to some degree, objectively bad or good.
Compare Daft Punk's Random Access Memories to Beethoven's 9th Symphony. Both are p h e n o m e n a l works of art, but what are they? I mean, both are a culmination of an entire career's artistic and commercial developement and, I think, should define the state of the era. Is it okay if artistic development overshadows skill and technique? How do you guys think today's greatest music will be viewed a hundred and fifty years from now? This stuff is wrecking my brain.