Communist Parties do do that often times when the ruling socialist or progressive anti-west government turn on them. Happened in Iran to half the communist movement, happened in Egypt under Nasser, happened twice in Syria during and after the UAR, happened in Peru under Velasco though in a situation in which the PCP remainder supported the government but the government refused to work with them meanwhile PCP split and many Marxists opposed or remained critical of the government. In those last three cases that is while the USSR has close ties to the government.

Sometimes it is people being cranks, but that is not to say there is not a serious precedent for the international position of supporting progressive governments means the squashing of real communist movements in a given country. The USSR and China had their fair share of backing strategic leaders and a good call or not for the USSR, it often times was harmful to a country's potential move towards communism.

Even when CPV was backing PSUV there was tension and Marxists calling PSUV revisionist and CPV leadership tailists, so the CC becoming embittered tailists who got pissed when their position in the alliance never rose is not crazy