One section, seven footnotes. The basis of the bishop’s role of governance is rooted in Vatican II, and the documents which followed it in the post-conciliar period. Liturgicae Instaurationes is the 1970 instruction from the CDWDS. You can check it on the sidebar.
[22.] The Bishop governs the particular church entrusted to him,[Cf. Acts 20:28; Lumen gentium 21 and 27; Christus Dominus 3] and it is his task to regulate, to direct, to encourage, and sometimes also to reprove;[Cf. Liturgicae instaurationes 5] this is a sacred task that he has received through episcopal Ordination,[Cf. Lumen Gentium 21; Christus Dominus 3] which he fulfills in order to build up his flock in truth and holiness.[Cf. Ceremonial of Bishops] He should elucidate the inherent meaning of the rites and the liturgical texts, and nourish the spirit of the Liturgy in the Priests, Deacons and lay faithful[Cf. GIRM 387] so that they are all led to the active and fruitful celebration of the Eucharist,[Cf. GIRM 22] and in like manner he should take care to ensure that the whole body of the Church is able to grow in the same understanding, in the unity of charity, in the diocese, in the nation and in the world.[Cf. Liturgicae instaurationes]
So a good question to ask lay Catholics and clergy: does your local bishop take this responsibility seriously? How much does he delegate? And does your diocese develop a progressive understanding as the years pass?
The CDWDS considers this a “sacred” task. Does every bishop agree in theory and in practice? If Redemptionis Sacramentum leaned a little on the bishops, do you suppose it would have had a discernible effect?