By delegation it is not the pope who “attends” to matters liturgical, but a department of the curia. They also acknowledge the preeminence of the CDF.
[17.] “The Congregation for Divine Worship and the Discipline of the Sacraments attends to those matters that pertain to the Apostolic See as regards the regulation and promotion of the Sacred Liturgy, and especially the Sacraments, with due regard for the competence of the Congregation for the Doctrine of the Faith. It fosters and enforces sacramental discipline, especially as regards their validity and their licit celebration”. Finally, it “carefully seeks to ensure that the liturgical regulations are observed with precision, and that abuses are prevented or eliminated whenever they are detected”[Pastor bonus 62, 63, 66]. In this regard, according to the tradition of the universal Church, pre-eminent solicitude is accorded the celebration of Holy Mass, and also to the worship that is given to the Holy Eucharist even outside Mass.
[18.] Christ’s faithful have the right that ecclesiastical authority should fully and efficaciously regulate the Sacred Liturgy lest it should ever seem to be “anyone’s private property, whether of the celebrant or of the community in which the mysteries are celebrated”[Ecclesia de Eucharistia 52].
This footnote refers to the delegation of specifics to the CDWDS and the CDF. We covered that a few weeks ago.
Delegation of authority is essential to good leadership. That presumes that the agencies involved, groups or individuals, are competent. And in the case of RS 17, that the diagnosis of “abuse” is accurate. And finally, that remedies make sense as good legislation and not as reactions to imagined problems.