If you're poor you just wait until you're borderline dying and then go to the E.R. and get charged $120,000 and then never pay it and then have debt collectors calling you for the rest of your life.
Or you're on Medicaid if you live in a sane state.
I guess it depends on how you define “poor” and “uninsured”. Considering most of America offers Medicaid expansion or ACA plans, being uninsured is basically a choice.
Or you're on Medicaid if you live in a sane state.