Also, by the 1990s the influence had spread to other evangelical leaders and many who never heard of a Scofield study Bible were being influenced.

American evangelical Christians in my experience are very ignorant of church history and even denominational differences. Very ignorant of Catholicism and blind to our Eastern brothers. The Orthodox church was pretty much invisible.

The Internet has allowed the curious to explore these things and I think it accounts for the increasing interest in many topics. That includes the historical teachings about the nation of Israel and the relationship to the current state.