That’s a dumb take, given that the two largest communist countries so far were both founded before the CIA ever existed. Lenin started the authoritarianism of the USSR by 1923 (not terribly long after WWI, although the Bolshevik coup took a while to consolidate power), and the revolution in China that put Mao Zedong in power in 1945, shortly after the end of Japanese occupation. But, as with the Russian revolution, the Chinese revolution had been going on for some time prior to WWII.

Meanwhile, the CIA didn’t even exist until 1946. The predecessor to the CIA, the OSS (Office for Strategic Services) was founded in 1942, specifically as part of the wartime effort.

Moreover, the US fought in two wars to prevent communists from taking over, since the communist governments were unfriendly to US interests, notably Kim Il-Sun in North Korea (took power in '48), and Ho Chi Min in Vietnam (took over part of Vietnam in '45). Additionally, Fidel Castro overthrew the Cuban gov’t led by Fulgencio Batista; Batista had the support of the US, and was friendly to US interests in the region, while Castro was decidedly not. The US attempted multiple time to overthrow Castro, and failed each time.

So the idea that the CIA is appointing the heads of communist countries is simply not supported by facts.