Chant Café has good word for promoters of Liturgical pop

Music that Broadens the Mind and Spirit
Over the years, I’ve had many people say to me, when discovering that I’m a Catholic musician, some version of the following: “I’ve learned to wince whenever I see that a chosen hymn was composed after 1965. I shut my book and try to brace myself until it goes away.”
I’m supposed to agree with this point of view, and I do sympathize with the feeling because I felt this way for years. But more and more, I find that these sorts of comments bother me. Most of the musicians singing post-1965 material are doing their best to make a contribution, and loathing their output can tend towards cultivating divisive antipathies.
Few of these musicians have any idea how many people are rubbed the wrong way by varieties of pop music at Mass. Plus, it seems like an odd demand that Mass should only have music written between, say 1850 and 1965. In the long history of the faith, that is a very small slice of time.
More substantially, the debate over hymns completely misses the essential point that has become more obvious over the last few years. The truth is this: the hymn war distracts from the core issue, which is whether we will sing what the liturgy is asking to be sung or whether we will sing something else. The Mass assigns texts throughout the year for the precise parts of the liturgy where hymns are often inserted.
The solution of course is the Roman Gradual (after all, this is the Chant Café) and use of the Mass propers, not the hymn sandwich.

[The Mass propers are those bits in the Mass which change from day to day. Here it refers to those parts sung by the choir or people (not the priest), printed in a book called the Roman Gradual. They are invariably replaced by a hymn or simply spoken.]
Christ the King propers are different from Advent which are different from Christmas and so on. They are all chosen with precision by the Church for a particular liturgical purpose. Therefore, they not only open the word of God to us; they also provide another means of spiritually accessing the overall liturgical experience in a way that accords with the calendar.
Discovering the Mass propers is a liberating experience, very much along the lines of what people feel when they first discover the Catholic faith itself. We don’t have to make stuff up. We don’t have to manufacture our liturgy from our own sense of how things should be.
Our main responsibility is to bury the ego, defer to the Church’s wishes, allow ourselves to become part of something larger than our own time and place, and serve the faith. This is a huge responsibility. Singing the propers makes being a Church musician and honor and a serious apostolate.