The leadership lost its nerve. Instead of taking the lead in the reform movement... they pulled the plug on it. They tried and are still trying to return the church to the dry ice of the previous century and a half.
People came into the Church in the Roman Empire because the Church was so good-Catholics were so good to one another, and they were so good to pagans, too. High-pressure evangelization strikes me as an attempt to deprive people of their freedom of choice.
The men who were running the church in the late '60s and '70s panicked when they saw the chaos, which developed after the council. The relatively modest changes of those years thawed the ice in which Catholicism had been frozen since the French Revolution.
The kernel is the belief that God is love and, in Catholicism, God's love is present in the world. It is in the sacraments, in the Eucharist, in our families, in our friends, in our neighborhood, and forgiveness in the touch of a friendly hand, in a rediscovered love God is there.