Pure elitist snobbery.
I am a self admitted non-artist. If I pick up a pencil and have a go at portraying some fruit so I can an idea across am I degrading serious artists?
Unfortunately the tools I have at my disposal for getting ideas across are few, and most of them involve language. If someone can't use the language at the level of someone who studies and perfects prose for a living are they to be derided?
She makes a point about Art needing to be moved back to the center of education. I suppose she feels this would solve the problem she has identified. I don't recall that Art has ever been at the center, and honestly don't think it needs to be there except for specialized education programs.