Maybe you need to rethink, IMO, on the whole, it HAS gone to that extreme already:
"...Christian Zionism is essentially Christian support for Zionism. Zionism is a political system based on ethnic exclusivity giving Jews preferential political rights which are denied to Palestinians. The United Nations has defined Zionism as a form of racism and apartheid. Nevertheless, in the words of Grace Halsell the essential message of the Christian Zionist is this: “every act taken by Israel is orchestrated by God, and should be condoned, supported, and even praised by the rest of us.”
The Significance of the Christian Zionist Movement
Estimates as to the size of the movement as a whole vary considerably. While critics like Crowley claim, ‘At least one out of every 10 Americans is a devotee’, that is between ‘25 to 30 million’, Christian Zionists such as Pat Robertson and Jerry Falwell claim weekly access to 100 million sympathetic Americans. What ever the true figure, all are agreed, that number that is growing in size and influence. They are led by 80,000 fundamentalist pastors and clergy, their views disseminated by 1,000 local Christian radio stations as well as 100 Christian TV stations. Doug Kreiger lists over 250 pro-Israeli organisations founded in the 1980s alone...."
I am not sure of these statistics. I know quite a few dispensationalist pastors and seminary professors who think Christian Zionism is plain wrong and dangerous. I already granted you that dispensationalism, as a system, can go that route; I just happen to believe it is a small fraction of dispensationalists who buy into it. But time will tell whether it grows like kudzu across the dispensationalist landscape.