The example stunk.
The implication is that people without insurance have no access to health care, or even preventative care. This is not the case for most of them. Using z's example, cholesterol-lowering drugs like generic statins can be had for something like 10 bucks a month.
Here's a Wal-Mart price list. That's just one source. I went over the many pharmaceutical donation programs in a response to Eri earlier.
I should point out that in the socialist paradise of rigid pharmaceutical price controls that the single-payer fans envision, these cholesterol-lowering drugs probably wouldn't even exist.