Art, by definition should not be objectively evaluated. Art is inherently subjective - objectively great art would not be art, as it loses personal meaning.
Perhaps you meant to compare the commentor above me to Zhdanov? His views seem diametrically opposed to what I said.
Right, the mania for 'politically correct' inspection of music, art, etc. went viral with Zhdanov, and even those who found the Soviets too authoritarian took it up with glee.