This narrative has been popularized all over social media for the last couple years.
Obviously it's true and not a surprise to anyone familiar with the history. But no one is asking more complex questions: why is it being pushed by algorithms and networks ultimately controlled by the same powers? Is it a "limited hangout"? Well poisoning? What does the "CIA" gain from revealing a sliver of its past activities and discrediting (both directly and by insinuation) a large number of radical artists and thinkers?
One idea - these days there are many MANY more players using the same strategy - maybe the CIA wants us to be aware of the technique to limit its effectiveness.
Not a direct response to your question; I figure you or others reading this may be interested in the thoughts of the host of The War on Beauty (best found on youtube).