Those who try to keep the shell without the truth find themselves in the worst of both worlds. Pure secularlism sells (obviously) and the truth has appeal, but a secularized religion is doomed to failure.
In a church that purports to be Christian, the liberals' drive for relevance makes them completely irrelevant; members of a club of declining membership. If the church becomes the same as the world, what's the point of having the church? And yet, what seems to be happening in some areas of the ACoC is not merely a desire to make the Christian faith more relevant. It is a push for a completely new religion. It is a drive toward paganism. It is grasping at the original lie of the garden, "you will be like God." It is wanting a form of godliness, but denying the true God and His power.