Yup. I know someone whose father was the son of refugees who lost everything and whose mother's family lost everything the Great Depression.

By the time this person was born, both parents had good income, but they continue to live as if in poverty (extreme frugality, never replace anything if they can spend 10x more time/money to repair, dumpster diving, etc).

The parents are low-level hoarders. The child is even more so.

It seems born of the trauma and uncertainty.