They explicitly reject the very idea of self-agency as a kind of original sin. The idea goes back to Jean Jacques Rousseau's myth of the Noble Savage who lived in a mindless, pristine paradise until civilization, with its concepts of property, division of labor, self awareness, and knowledge corrupted the primal Utopia. Rousseau asserted that there was no means of returning to paradise, but the next best thing was a state of collective totalitarianism on the grounds that sinful self-agency must be subsumed in the 'general will.' This is the essence of the left: adults who long to regress to helpless infancy with everything being done for them. Humanity is split according to whether Rousseau's vision is seen as profoundly attractive or utterly repulsive. The hippie who wrote the linked post above is completely on board with Rousseau. That is his deepest driving vision, and he simply cannot imagine anything else. Read Thomas Sowell, *A Conflict Of Visions*.