In reality what happened was that an unprecedented clericalization came on the scene. Now the priest - the 'presider', as they now prefer to call him - becomes the real point of reference for the whole liturgy. Everything depends on him. We have to see him, to respond to him, to be involved in what he is doing. His creativity sustains the whole thing. Not surprisingly, people try to reduce this newly created role by assigning all kinds of liturgical functions to different individuals and entrusting the 'creative' planning of the liturgy to groups of people who like to, and are supposed to, 'make their own contribution.' Less and less is God in the picture. More and more important is what is done by the human beings who meet here and do not like to subject themselves to a 'pre-determined pattern.'
Joseph Ratzinger, Joseph Ratzinger Collected Works, ed. Michael J. Miller and trans. John Saward, Kenneth Baker, S.J., Henry Taylor, et al, vol. 11, Theology of the Liturgy: The Sacramental Foundation of Christian Existence (San Francisco, CA: Ignatius Press, 2015), 49.
The particular quote comes originally from Ratzinger’s The Spirit of the Liturgy (originally: Einfüng in den Geist der Liturgie).
The series as a whole (JRCW) is edited by Gerhard Ludwig Cardinal Muller (current Prefect of the Congregation for the Doctrine of the Faith) in conjunction with the Institut Papst Benedikt XVI. in Regensburg: Rudolf Voderholzer, Christian Schaller, Gabriel Weit.
The original German edition: Theologie der Liturgie: Die sakramentale Begründung christlicher Existenz, Gessammelte Schriften II (Freiburg im Breisgau: Verlag Herder GmbH, 2008).