Yes, always start by assuming the worst about the other side.

I don’t need to assume the worst about the “other side.” Their own words betray them.
The “traditionalists” will probably claim another motivation, such as trying to follow the actual documents of the Church and writings of recent popes, and rectifying the actual problems which have been decried by those recent popes.
That is the key - there really are problems in the Church today regarding sacred music. Certainly as far as the liturgy is concerned we cannot say that one song is as good as another.
I have never said that one song is as good as the other. There are dreadful songs written 10 years ago, 20 years ago, 50 years ago, 100 years ago, 200 years ago. Many posters here and in similar recently closed threads have had nothing good to say about
anything written in the last 50 years. They are wrong.
The Christian community must make an examination of conscience so that the beauty of music and song will return increasingly to the liturgy. It is necessary to purify worship of deformations, of careless forms of expression, of ill-prepared music and texts, which are not very suited to the grandeur of the act being celebrated. Not all that which stands outside the temple (profanum) is fit to cross the threshold. If it does not at once possess the sense of prayer, of dignity and beauty, music – instrumental and vocal – by this fact is precluded from admission into the sacred and religious realm.
This leaves a broad spectrum of music because what possesses “the sense of prayer, of dignity and beauty, music – instrumental and vocal” is highly subjective. What you feel fills those qualifications might not fill the qualifications of the next person. And it doesn’t matter if “you” are a pope or a janitor.
The category of “sacred music” today has undergone such a broadening of meaning as to include repertoire that cannot enter into the celebration without violating the spirit and the norms of the Liturgy itself. Not all expressions of the figurative arts and of music are capable of adequately expressing the Mystery worshipped in the fullness of the Church’s faith.
True. I have heard Christian “rap” but I pray it never sets foot in Church.
As a consequence, not all musical forms can be considered suitable for liturgical celebrations. There can be no music destined for the celebration of the sacred rites that be not first true art. A composition for Church is sacred and liturgical insofar as it approaches Gregorian melody in flow, in inspiration, and in flavor, and so much less is it worthy of the temple insomuch as it is recognized as departing from that supreme model. Only an artist profoundly immersed in the sensus Ecclesiae may try to perceive and translate into melody the truth of the Mystery that is celebrated in the Liturgy.
What is “true art” is subjective. Is there not a Metropolitan Museum of Art and a Museum of Modern Art? With all due respect to the two most recent popes, both of whom highly beloved by all,
including myself, they both were/are extremely old men with different musical tastes than many younger people. I also don’t think that either were liturgical musicians. I do not denigrate Gregorian Chant, but it is not the only form of music which can be sacred and worthy of the Liturgy.
The words above are not my words. They are direct citations from our two most recent popes. So I guess you will conclude that they never learned to worship either.
Since I already call JPII “St. JP II”, and since it’s obvious with B16, yes, both have learned to worship. But what moves them to worship might not be what moves me or John or Sally or Bob or Jose or Helga to worship. For the Church to be universal, all its members must be considered and no one form of music mandated as the only way to worship because no one form of music is the only way to worship.