Earlier quoted context omitted.
The methodology is arbitrary and is mostly a measurement of average credit score. Methodology: https://wallethub.com/edu/states-with-the-most-people-in-fin... This Equifax article lists CA has having a better average credit score than Texas. I did't bother to sort the Equifax to list to see how closely to correlates to the article, though. https://www.equifax.com/personal/education/credit/score/arti...
Credit score is not a useful measure of financial health. A minimum wage worker living paycheck to paycheck but making minimums on a large credit card balance will have a better score than a retiree who's long since paid off his house and car and pays cash for entertainment and playthings.
Cash flow underwriting would paint this picture better [3], but is still not widely performed outside of an org containing the deposit account (internal underwriting for credit products that don't have to conform for asset backed security sales). So, credit score is a reasonable proxy at this time for household financial health (imho) [4] [5] based on research performed by the CFPB.
[1] https://www.cbsnews.com/news/cost-of-living-income-quality-o...
[3] https://fintechtakes.com/articles/2024-05-22/cash-flow-under...
[4] https://www.consumerfinance.gov/about-us/blog/new-report-exp...
[5] https://files.consumerfinance.gov/f/documents/cfpb_credit-ka...
(day job is in finance/consumer credit)