I'm a little taken aback by the supercilious attitude toward Fr. Tarazi, who enjoys enormous respect as an entirely Orthodox Bible scholar within the OCA and by many other Orthodox Christians.
While it is true that many scholars have grown increasingly sceptical in the past decade about the specifics of the documentary hypothesis (largely under the influence of literary scholars such as Robert Alter and Scripture scholars such as Robert Blenkenship), and much more modest in their confidence about how accurately they can "tease apart" the received text to gain insight into specific hypothetical documents from which the receive text was later compiled, it is absolutely not the case that this means most, even rather conservative, Catholic and Orthodox scholars have returned to a pre-critical notion of the entire Pentateuch being written down or immediately dictated by Moses (whose death, after all, is recorded near the end of Deuteronomy).
Rather, the vast majority of Orthodox and Catholic (and Protestant) Scripture scholars have concluded that it is, in many cases, not possible to determine precisely where there may be "fault lines" pointing to a variety of different oral and written traditions, later compiled into the received Biblical text.
Many would agree that there arose at times a myopic obsession with those documentary, historical questions, an obsession that undervalued the breath-taking artistic coherence and cohesiveness of the Scriptures, and sometimes missed the (theological) point. But, none but a marginal few would argue against that the notion that there was such a variety of oral and written sources.
At the conservative Roman Catholic seminary (attached to a Benedictine monastery) from which I received my MA in Sacred Scripture, the Scripture professors were trained at the Ecole biblique de Jeruslem and at the Pontifical Biblical Institute, highly regarded schools by even very conservative Christians. They were very clear on recent insights into the weaknesses of the standard documentary (JEDP) hypothesis. But, none would dream of speaking dismissively of the scholars who labored within the confines of that theory, and who still made a gerat many very valuable contributions to a penetrating understanding of the Bible.