Many of the theologians in the article are supporting national restoration for Israel; as opposed to individual redemption for elect Jews. What gives?
Many Reformed theologians, like theologians in general, have believed in a future for national Israel. The difference between their biblical outlook and what goes around in dispensationalist/futurist/rapturist circles is considerable.
Dispensationalists believe that the modern state of Israel is prophetically significant in spite of the fact that they exhibit no true faith towards the triune God of the Bible. Dispensationalists believe we are the terminal generation because of what happened 1948 -- a purely political action -- not because any true faith is exhibited in the nation
The Bible, on the other hand, teaches that blessing is predicated on faith, true faith in the God of Abraham, and the Savior of mankind, the Lord Jesus Christ. National repentance will be exhibited in Israel before the return of Christ for His own. That may be in the near future, or, more likely, it may still be many generations away. Of course this is true of all the nations, not just Israel.