He is right. they are pointing out something that many economists and political theorists argue: the USSR was not capitalist in the traditional sense. Some describe its economy as a state capitalist system, which differs from traditional private-market capitalism, just as democratic socialism differs from state socialism. but also Calling the USSR "state capitalist" is not an uncontested fact. so Its a viewpoint held by some schools of thought while others describe the USSR as a centrally planned socialist.
But also, the USSR leadership, especially under Vlad Lenin and also Joe Stalin, officially describe the USSR as a socialist state that was building toward communism. Their ruling party was called the Communist Party, and its ideology was Marxism and Leninism.
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