Daniel Asia continues to say things about Cage that make no sense to me:
I will continue to maintain that works that rely on his well-known use of chance procedures are not worth the time of any listener, and this includes a large amount of his output.
I just listened again to the Christina Fong, Glenn Freeman, and Karen Krummel recording of Cage's Three2, Twenty-Three, Six, and Twenty-Six. I greatly enjoyed the experience. Do I care if these used chance procedures or not? Not really.
Do I think this music will persist? Maybe. One sign is that the Amoeba Music CD racks always have more recordings of John Cage's music than those of Charles Ives. Although I like the music of both, I spend more time with the former, a little bit to my surprise.
Of course, there are more Mozart and Beethoven CDs than all of American composers combined. But my listening continues to thrive despite not listening to 19th century music.