There is apparently research on Christian Fundamentalist’s inability to manage their own finances.

This article contributes to the understanding of this relationship by exploring how religious affiliation affects wealth ownership for conservative Protestants (CPs). The results demonstrate that religion affects wealth indirectly through educational attainment, fertility, and female labor force participation. The results also provide evidence of a direct effect of religion on wealth. Low rates of asset accumulation and unique economic values combine to reduce CP wealth beyond the effects of demographics.

Full journal article.

So what is going on? Education is worse than average. Ability to manage finances is worse than average. Is it surprising that they have some fundamental issues with average theology? Of course not! It follows as day follows night.

Perhaps the need for research lies with finding the root cause for the deficits that have been discovered. A chicken and egg issue so to speak.