It’s all on purpose:
http://www.uhuh.com/nwo/communism/comgoals.htm
22. Continue discrediting American culture by degrading all forms of artistic expression. An American Communist cell was told to “eliminate all good sculpture from parks and buildings, substitute shapeless, awkward and meaningless forms.”
23. Control art critics and directors of art museums. “Our plan is to promote ugliness, repulsive, meaningless art.”
All excellent points and true!