17. It is, therefore, of the greatest importance that the celebration of the Mass or the Lord’s Supper be so ordered that the sacred ministers and the faithful taking part in it, according to the state proper to each, may draw from it more abundantly[Sacrosanctum Concilium 14, 19, 26, 28, 30] those fruits, to obtain which, Christ the Lord instituted the Eucharistic Sacrifice of his Body and Blood and entrusted it as the memorial of his Passion and Resurrection to the Church, his beloved Bride.[SC 47]
18. This will fittingly come about if, with due regard for the nature and other circumstances of each liturgical assembly, the entire celebration is arranged in such a way that it leads to a conscious, active, and full participation of the faithful, namely in body and in mind, a participation fervent with faith, hope, and charity, of the sort which is desired by the Church and which is required by the very nature of the celebration and to which the Christian people have a right and duty in virtue of their Baptism.[SC 14]
The recent directives on Communion not from the cup would seem to be contraindicated in light of the desire of the Church that the faithful may “draw … more abundantly” from what Christ offers in the Mass. It’s not a flimsy concept, for the Council bishops reinforced the notion of participation at least five times in the first quarter of the liturgy constitution.
GIRM 18 seems to present no less zeal for participation–conscious, active, and full–two generations after Vatican II. Good that the Church communicates the fullness of this, reminding clergy that the people have a right to participate according to the ordering of the liturgy, and that for our part, we laity have a duty to take up that mantle.
It seems pretty clear, doesn’t it?