Professor Schiffman comments on the Scrolls tremendous advances in understanding Late Second Temple Judaism along with providing the backdrop for Christianity.
He also identifies the Qumran Community as Sadducees (from Zadok Priesthood) rather than Essene which is convincing given that the priests were the primary scribes of scripture and dissemination of biblical teaching to the people. They protested the Maccabean takeover of the Temple when the Hasmonean dynasty was established in 152 B.C.E.
All these advances were impossible before the Israeli Antiquities Authority reorganization and appointment of Emmanuel Tov leading an international and inter-confessional team to begin publishing the bulk of the discovery.