Let me spell out each of these in turn. And if we have the words down right, in this view, that's all that matters. Even non-sacramental Christian worship, such as Evening Prayer, is informed and shaped by a sacramental spirit, an incarnational spirit.
Popular piety is a second source of frustration in teaching worship.
I don't need to learn anything about prayer. And leading Christian corporate prayer is still another. Popular piety becomes the enemy of worship when it imagines there's nothing to be learned about Christian public prayer. Contempt for rites, for example, shows itself in an inappropriate mixing of worship forms from one rite to another, without regard to the integrity of each of the rites themselves. There is nothing human that cannot be improved.