That's conspiracy theory nonsense.
Yuri was a real KGB defector, and the interview is from 1984 which is way before the effects we see today. Watch the whole thing here [1], and read the sometimes a bit offensive book on it by a CIA case officer [2].
Then take both with a bit of a grain of salt, but think what it would mean if both that seem to support each other’s assertion just told partially the truth.
[1] https://youtu.be/y3qkf3bajd4
[2] https://www.amazon.com/Willing-Accomplices-Influence-Politic...
However, that doesn’t mean the movements of dissent is caused by this. They could be, or they could be a symptom of the problems not solved by a long term malfunctioning Democratic system.
[1] https://youtu.be/bX3EZCVj2XA