My personal opinion is that the position of the Catholic Church about liturgical music is marvelous! There is liberty with boundaries, at least in the OF Mass, and this means that a priest can allow the music directors a free hand to select from 2000 years of music–and that 2000 years includes 1960 through 2019!
I personally like a variety of music in Mass (or in a Protestant worship service). One of the reasons, IMO, that Protestant Evangelical communities struggle to hold onto their congregations is that they divide them up into “Classic” or "Traditional, and “Contemporary.”
This is not good. Older people need to hear and appreciate (not necessarily like) the music that young people like, and younger people desperately need to hear and sing the music that their grandparents and further back sang.
Sacred music connects all of us Christians–and yes, this includes the Protestants who didn’t find their back to the Catholic Church or have yet to find their back to the Catholic Church. Music helps us to understand each other.
I don’t think I would mind chant as much if it were “part” of the Mass, but not the entire Mass. To me, chant is just too monotonous and I have a very difficult time with no regular melody (Disney kid!–I like my songs to have strong melodies!). JMO, of course. But I like variety in liturgical music. Again, JMO! I’m not saying that this is the way it should be or else.