I'm not sure he said that it must enrich you or it isn't art. His point was whether or not the effort one puts into a particular thing saps or uses up intellectual intelligence of a person. Is the task a hamster wheel where no benefits are experienced by anyone other than the hamster or is the hamster wheel connected to a capacitor and providing electricity to the other hamsters. I don't see a reason to get into the elitist arguments. All of these activities fall somewhere on the spectrum of the amount of good provided to humanity. Closed loop activities that only recharge one's battery provide less benefit to humanity and can be said to sap or use up our intellectual intelligence. There is no elitism about this argument, it's just a 30k foot view of us hamsters and which ones use more or less intelligence that benefits the rest of the hamsters.