"For these are the days of vengeance, that all things which are written may be fulfilled." (Luke 21:22)
It has?
The Jews have said that Christ is their God?
Christ said the last days would be the worst in human history (Mat.24:21) which 70 AD doesn't qualify as.
As for the intercalation, the author is right, we believe that God is using the Church today, not Israel.
But I noticed that he doesn't give our New Testament scriptural justification for it, it is based on the reading in Rom.11:25-28.
7) The promised Deliverer will come out of Zion and the nation will be saved (Romans 11:25-29). That the Christian now inherits the distinctive Jewish promises is not taught in Scripture. The Christian is of the heavenly seed of Abraham ; Genesis 15:5,6; Galatians 3:29 and partakes of the spiritual blessings of the Abrahamic Covenant.
It should be noted that when Scofield wrote his notes, there was no nation of Israel in existance.
http://bible.crosswalk.com/Commentaries/ScofieldReferenceNotes/srn.cgi?book=ro&chapter=011