In real life, approximately zero evangelicals want some kind of Gilead. If you talk to them, the most ideological want some sort of idealized, non-racist high-tech version of the 1950-80s. No doubt there are some cranks out there, but they’re about as common as Westboro Baptist Church members (one family) or the series of weird niche western US cults. The generalization is totally wrong and informed by propaganda.
I’ve thought a lot about how strange it is fiction can have such a powerful effect on people’s perceptions, and people often seem unaware of the propagandistic nature of it. Another example is Atlas Shrugged.
At any rate, being fascinated by the subject of dreams, I have talked to a lot of evangelicals about their dreams and have not noticed any deviation from the norm.