The pastor of a parish will typically have no education in the chant or in music, and he will hire the first music director who walks through the door.
For two thousand years, the Church has guided the development of music, carefully legislating to fuse artistic talent and aesthetic beauty with the demands of the Faith.
Thus the slogan should be reversed: Catholics taught the world what music is supposed to sound like, and, more importantly, what it is supposed to mean.
It bothers me when I hear it in a car commercial or some such. But for the most part, it's better than seeing sacred music relegated to the scrap heap.
Inaudible prayers, particularly of the Canon, which at first don't seem to have anything to do with music, end up being a very important part of the aesthetic of the traditional structure of the Mass.