US is one of the richest countries, has less poor people than other rich countries, the "poor" in the US are richer than the "poor" in e.g. UK or Italy, and "average" (mean and median) incomes in UK or Italy would be considered "poor" in the US.
see: https://twitter.com/CPopeHC/status/1469070902813995014
So, inequality is irrelevant, only absolute poverty is relevant.
EDIT: NOTE: the graph in the link above is disposable income (a.k.a. above cost of living)
Personally, I don't think that poverty is the issue here. People aren't looting Apple stores because they're poor. But the lack of social safety net (income, health, mental health) for the poorest probably doesn't help.