Pay special attention to this paragraph:
2. To Show the Way of Light in the Liturgical Field
First of all, one of the duties of a Higher Institute of Liturgy is to be a beacon which shows a path of light in matters of the Liturgy. Assuming such a duty makes it possible, at the same time, to inform and also to form leaders, who are capable of appreciating the riches contained in the Church’s public worship, in the true value of those riches, and who, moreover, are ready to share them with others. That makes it possible to enlighten, and to make more explicit, the close link that exists between theology and liturgy, the faith of the Church and the celebration of the Mysteries of Christ, between lex credendi and lex orandi.
It is true that a Higher Institute of Liturgy must promote research. However, above all, it should establish its work on the solid and durable foundations of the faith, Church Tradition, and the heritage present in the texts, the liturgical gestures and attitudes. Such an Institute must thus be pleased to consider that the Holy Liturgy is a gift that we receive from Christ through the Church. In fact, the Holy Liturgy is not a thing that one invents. It includes, indeed, immutable elements, which come from our Savior Jesus Christ, such as the essential elements of the Sacraments, and also variable elements, which have been carefully transmitted and preserved by the Church.
Many abuses, in the field of the Liturgy, originate not in unwillingness, but in ignorance, since people generally reject “those elements whose deeper meaning is not understood and whose antiquity is not recognized” (Redemptionis Sacramentum, 9). Thus, certain abuses have as their origin the practice of giving place to spontaneity, or to creativity, or even to a false idea of freedom, or to that error that has a name, "horizontalism", which consists in placing people at the center of the liturgical celebration instead of drawing their attention upwards, that is, toward Christ and His Mysteries.
Darkness is dissipated by virtue of the light, and not by verbal condemnations.
This is why, notably, a Higher Institute of Liturgy must concern itself with training experts in the best and authentic theological-liturgical tradition of the Church. It thus forms them in the love of the Church and its public worship, and it teaches to them to follow the norms and directions given by the Magisterium. In the same way, such an Institute also envisions suitable courses for those who want to promote the continuing education of the clergy, the consecrated people and the faithful laity. As Pope Jean-Paul II wrote to the plenary assembly of the Congregation for Divine Worship and the Discipline of the Sacraments, one month before his death: "Adequate training programs in parish communities, associations and ecclesial movements are urgently needed, so that the liturgy may become better known in the richness of its language and be lived to the full. To the extent that they can do this, communities will feel the beneficial influence of the liturgy on both their personal and community life.” (Letter of Pope John Paul II to Cardinal Arinze, March 3, 2005, n.5).
Before anyone starts advocating practices to increase the "fellowship" or "celebrating the community of Mass", he should carefully read this document!