The vast majority of people think the way they have been taught and conditioned to think. It makes no difference if they think they are critical thinkers or not—for part of their conditioning is to convince them that they are critical thinkers while bringing them to tow the line of the cultural Intelligentsia.
Biblical Christianity requires, at a fundamental level, critical thought. It is never and has never been in favor with the culture at large anywhere on this Earth. The maintenance of Biblical Christianity requires incessant critical thought that runs directly against the grain of the worldly culture.
When Christianity deviates from this, it is incoherent. This is why broad evangelicalism in America today is increasingly becoming irrelevant.