The artist must hew to a very narrow path as he or she struggles to create a highly resolved and defined personal statement and at the same time establish a work that is intuitively recognized (by a certain public, at least) as meaningful and coherent.
Recognized as meaningful….by whom, according to whom? That is the question. If art remains primarily just a personal gesture of expression — if it cannot somehow become part of the shared human perception — then I believe it sinks in importance and becomes an irrelevant vanity.
No matter how revolutionary, art should still retain a notion of the consensual, a link to the shared human experience and not just the magnificent delirium of an individual creator. However personal art may become and must become, it should avoid being arbitrary.