I'm a professor of music but don't pretend to know everything. However, this "My Little Pony" sound bite has been around with a small continent of critics who often use pejorative comments to make a point. There was actually a discussion about this at a workshop at the U of Notre Dame with scholarly participants I attended some years back. No one could find a connection to this or the cut and paste, Brady Bunch theme. I do agree, however, that Gregorian chant is to have pride and place and polyphony should be encouraged.  Our Archdiocese respects this and we do have two communities that use the Tridentine Mass and it's lovely.  But our church is diverse and the documents speak of the need to reach the faithful which is becoming increasingly diverse and bilingual. I do recall that Schutte has written some pieces that are based on Chant melodies, for example, Salve Regina. Since the release of the 3rd Edition of the Roman Missal, all worship publications have Chant Mass listed first.