The Soviet Union officially existed from 1922 to 1991. The Cuban revolution took place in 1959. Picasso lived from 1881 to 1973. At what point in his life, in your opinion, did he NOT put out ugly meaningless garbage ('art')?
Guernica, 1937 Sofia
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Dora Maar au Chat, 1941
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Baboon and Young (1951)
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Nude Woman with a Necklace (1968)
The point of the excerpts are that at one time he was highly involved in the communist party, although not specifically the Soviet Union and it would seem that would be the time he was supposed to be ruining America. His most memorable work all appears to be from before his membership even and then before the time mentioned in the book you have cited.
As for the art, I don’t get much out of anyones I have seen so I am probably not the one to ask. People can get meaning from those I’m quite sure. I just don’t buy that there always has to be one acceptable meaning from the creator for any piece of art.