When the theological history of this sad moment of Evangelicalism is written, it will be noted that neither grace in Jesus, nor good works through Jesus, but a sense of shallow accord from the larger culture was of prime importance to the majority of Evangelicals.
In the end, what most Evanglicals could not bear was being disagreed with. Being disagreed with was so disagreeable, it even got repackaged as persecution.
It's as though the New Testament tells the story of Jesus coming to Victorian England, and all of Evangelicalism is primed to fight for maintaining a culture committed to Victorian morality, because that is the only place Jesus could plausible thrive.
It's as though the New Testament is the story of Jesus thriving and being loved by everyone.