In my experience, they tend to consider Cuba a "Soviet sugar plantation" or some such. Because they have 0 interest in understanding material conditions they believe that Cuba should not have traded with the USSR and should've focused entirely on being a completely self-sufficient agrarian idyll or something. They give their usual cries of "revisionism" with regards to Cuba because again, the concept of a country needing to adapt to changing material conditions is one they refuse to consider. They also tend to dislike the DPRK for "revisionism" as well, usually because Juche isn't enough like their special little anarcho-maoist-hoxhaist idealism.