…it is clear that the reception of the liturgical reform is an eminently important test for the reception of Vatican II and, especially, of its ecclesiology. The reception of Sacrosanctum Concilium includes reception of the ecclesiology of the liturgical constitution and its ecclesiological consequences; vice verse, the rejection of Sacrosanctum Concilium is a rejection of both the liturgical constitution and its ecclesiological consequences. Regarding this, the case of the Lefebvrists is particularly significant. The Society of St. Pius X has always looked – from their perspective, coherently – at the liturgical reform not as a problem as such but as the gateway for Vatican II and the “discontinuities” that the ultra-traditionalist schismatic community has always rejected: the vision of the Church and in particular the Church and ecumenism, the Church and the Jews, and interreligious dialogue.
Massimo Faggioli, “The Liturgical Reform and the “Political” Message of Vatican II in the Age of a Privatized and Libertarian Cullture”, p. 12, in Worship 90 (Jan 2016): 10-27