Texas LL here. While in general I agree with your assessment that they may do the same thing again, I had a good experience with a family that had a BK.
The BK was only about 2 years in their past, but they had paid everything 100% for those 2 years per their credit report. The husband made good money. I decided to take a chance, and I am glad I did. I put them on a MTM and required cashiers checks for some time. But soon they demonstrated excellent payment habits and I moved them to a 12 month lease. They ended the lease properly and bought a house. So not all BK tenants are bad.
I had a tenant (couple) who had a Bankrupcy due to medical bills. They both were employed with jobs. They stayed 5 years and faithfully paid on time. Left to move to a new job out of town. Personally in the situation OP states I would be more concerned if the person could afford the rent - if ex didn't pay the child support.