It does explain why people can’t organize two generations later in the imperial core and exhibit all of the characteristics within the Red Sails article. Hell, it even explains why some if not most communist parties in the global north lack any revolutionary spirit and are just reduced to some socdem party(example Communist Party of Japan).
The cointelpro program never died but evolved to disturb popular movements and organization at this moment. The red scare lives on. However, fortunately, all of this doesn’t apply to the same extent for the Global South.
It is not asinine at all. It is true that labour organizers get assassinated in the Global South but this is done with the help of the imperialists. Just take a look at the history of fascists dictatorships in latin america to see this unfold.
With this in mind, places where the imperialist influence is currently weak show a fertile ground for socialist revolutions and this is actively happening in the Global South.