The fact is, in today's reality, artists have to be able to articulate what their art means in words (or pay someone else to do it). Whether trying to convince investors that a film will bring a return or a cultural council that a site-specific performance piece deserves a grant, artists have to be able to express what their art is about and why it has value in order to get the funding to make it happen. Maybe this is part of the issue - artists see their art as something sacred (as they should), and they don't want to degrade it by associating it with financial transactions. However, mystifying the art-making process and adopting a martyr complex can only go so far. Maintaining the myth of the long-suffering, "starving artist" may promote a feeling of camaraderie through an "us versus them" mentality, but it ultimately does artists and their art a disservice. If you truly believe your art has value, you should put some effort into allowing the world to understand it. Challenging does not have to mean inaccessible. Obfuscating the intent and process behind a work does not add a layer of meaning.
To paraphrase another giant of modern dance, Twyla Tharp, making great art is about showing up to work every day because you never know when the divine nectar will fall. It is true that art has moments of transcendence that can't be expressed in words - that's why we love it. But, in my experience, you can't have those moments without a strong foundation of discipline and dedication. And that is very easy to grasp.