"With rare exceptions, there are no shrines or temples in the village culture of the Iron Age I highlands in contrast to the proliferation of such in the fortified cities of the Late Bronze Age. This suggests a change from the traditional religious worship of the preceding period to a 'simple, aniconic, noninstitutionalized cult' [Dever]. In addition, the absence of pig bones suggests an ethnic marker for people for whom eating pork is taboo."—Hess, Israelite Religions, page 234
Something happened! Connect the dots; I happen to believe the dots are best connected by the Hebrew bible :)
Of course, you can choose otherwise, but you still have to explain the change. No, it is not seeking proof to bolster faith; rather, it is faith seeing the evidence and knowing why it is the way it is.