Again, I have no direct experience with the art world, but from my experience, it doesn't really matter whether my relationship with visual art is open-ended or not as long as there is a good spread of imported cheeses and perhaps some Scotch at the gallery opening. I'm sure this has a thwarting affect to the average Joe. This 'spin' only diminishes those artist's egos who refuse to acknowledge their art as product. Not all at once and not all the time. I think a happy balance can and needs to be struck between what the viewer should know, and what they need to get on their own.
Vagueness turns everyone off.
This is why there is general disdain for artworks, because often they are vague and therefore difficult to understand. In order to reach a wider audience artists and writers need to be specific and clear. Non-didactic art is the only art I find truly authentic. Viewers are going to bring their own ideas to their understanding to art no matter what. Artists and curators don't need to leave anything open for anyone.