An argument for Latin liturgy is that it brings a sense of the transcendent.
By transcendent, I do not necessarily mean "supernatural," but rather that which is not bound to a particular time and place.
For example, 2 + 2 = 4 transcends time and place. It is as true in the US as it is in Switzerland. The same is true for moral principles or for Revelation.
Vernacular means local, and Catholic means universal.
John Paul II's neo-conservative Church consisted in universal morals and local liturgies.
Such a structure is doomed to fail. Therefore, Amoris Laetitia was not a surprise.