I talk to a lot of american evangelicals and this isn't true either. A fair portion of them do want the racism back in the form of segregation, they just know not to use either term to describe their ideal.
They also do want moderate-to-heavy restrictions on or punishment for abortion, birth control, homosexuality, miscegenation, divorce, women owning property. It's not quite gilead but it's a lot closer to that than to "the 80s without racism."
You'll probably rarely run into people who are actively and openly pursuing a government that would implement all of those policies. But framed individually and neutrally for example "should no-fault divorce be removed" these are mainstream positions.
I didn't get my opinion here from fiction or the internet. I've lived a lot of my life among american evangelicals and am a practicing christian even now. I have a lot of ties to this world still for complex reasons. Walking back and cracking down on a lot of the social freedoms gained in the last few generations are unfortunately popular ideas that you can't dismiss as "just some cranks."