These were almost all technical people, raised on the Internet, social media, and discussions in comment sections. It was fascinating to see how bad they expected America to be according to Internet comments and news articles. Many of them were shocked to realize that we do have social safety nets, disability programs, heavily subsidized or government healthcare for lower incomes, and so on.
I’ll be the first to admit that our systems require improvement and are far from perfect, but at the same time it’s not the dystopian society as portrayed on Reddit’s front page or in certain media outlets day in and day out.
I can’t speak to the OP’s situation because obviously we don’t know the particular details, but given the mention of nearly $10 million of medical treatment it’s possible they were referring to a new or experimental treatment that wasn’t yet covered by traditional healthcare options. We have a lot of cutting-edge and experimental treatments in the United States, but insurance usually refuses to cover expensive experimental treatments until the evidence is sufficient to support their use. For rare disorders, it can take an extremely long time to collect enough evidence to reach that tipping point. It should be noted that many nationalized healthcare programs won’t cover or offer these treatments for the same evidentiary reasons, so I wouldn’t assume this was a uniquely American problem without further details.