Airing out your boyfriend and his familie's dirty laundry on a anonymous internet forum is not a way to reconcile the way you feel about it. This has nothing to do with the Dunning-Krueger effect and perhaps more to do with you not wanting to appear elitist and judgemental. Which is precisely how many fundies act.
"You were not there for the beginning. You will not be there for the end. Your knowledge of what is going on can only be superficial and relative" William S. Burroughs