They are like the hasty critics who dismiss some great work of art because it is not representative, or historically accurate; and so entirely miss the aesthetic values which it was created to impart.
Consider a picture of the Madonna.

Minds at different levels may find in this pure representation, Bible history, theology, aesthetic satisfaction, spiritual truth.

The peasant may see in it the portrait of the Mother of God, the critic a phase in artistic evolution; whilst the mystic may pass through it to new contacts with the Spirit of life.

We shall receive according to the measure of what we bring.

Now consider the parallel case of some great dramatic liturgy, rich with the meanings which history has poured into it.