I cant believe that you believe that ! What a load of tripe!:D:p
Firstly what is sub-standard art. Who's standard are we talking here, yours, mine or art intillectuals like Capon or Hughes (I'm sure that they would also disagree with your statement.)
I think the advent of mass media has been the vehicle for the dissemination of ideas and art.
Warhol and Lichtenstein destroyed the concepts that art belonged in the parlors of Victorian or Elizabethan mansions and belonged to the people.
Pop art for a Pop Culture....Yeee Ha:D