You know the cliche - the more things change, the more they stay the same. I started re-reading Wellhausen's Prolegomena to the History of Ancient Israel just now. He tells about his epiphany when he learned that Graf dated the Prophets before the Law, and later on, he describes the controversy engendered by the idea that P (the Priestly Source - Leviticus, etc.) was later than D (Deuteronomy). I found his description of the apologetic attempted rebuttals strangely familiar.
To say all in a word, the arguments which were brought into play as a rule derived all their force from a moral conviction that the ritual legislation must be old, and could not possibly have been committed to writing for the first time within the period of Judaism; that it was not operative before then, that it did not even admit of being carried into effect in the conditions that prevailed previous to the exile, could not shake the conviction--all the firmer because it did not rest on argument--that at least it existed previously (pp. 11-12; emphasis original).Julius Wellhausen, Prolegomena to the History of Ancient Israel, Meridian, 1957 [originally published 1878, German]. E-book version available here.