Disagree. Evangelicals don't give a hoot about others who may not help Israel. Their support for Israel is sincere and derives from Biblical teachings which are not subject to change by the whims of other groups.
What do hoots have to do with it? Whatever hoots evangelicals continue to give, and they'll continue--it's not enough to stem the tide that has turned against Israel. The Democrats used to be pro-Israel. US Jews (liberal, too) used to be pro-Israel. Europeans used to be ashamed of their antisemite past. All that has changed. The religious right in America is not big enough to turn the ship of state in Israel's direction indefinitely.