I think Tyler Shuster must have been channelling the author of Lamentations when he wrote The Fall of Christian Creativity.
The cause for the decline of the quality of Christian art is essentially this: Christian art has become the subject of Christian art … An example from a popular worship song illustrates this point. “We lift our holy hands up, we want to touch you.” These lyrics are not focused on the glory of God, but on worship itself. This song worships worship.
I wonder if much of our missional conversations are guilty of the same thing.