Some of these metrics take that into account, for example Life expectancy at age 60 in years is still lower in the USA then most other comparable countries. Thi

Some of these metrics take that into account, for example Life expectancy at age 60 in years is still lower in the USA then most other comparable countries. This metric eliminates the potential bias you described by not counting anyone who died before the age of 60. But the point of having a variety of metrics is that other potential biases might be present in some of them, but across all of them, the most likely explanation is a health care system (or health care norms) that work worse compared to health care system in other countries. To summarize, there may be a cultural reason for some of the metrics (say higher drug usage among pregnant people causes higher infant mortality rate), but if you have higher number of preventable deaths, higher treatable mortality rate, uniquely a negative trend in maternal mortality, higher deaths from suicide, etc. etc. than the evidence that this is the fault of health care system instead of culture starts to become overwhelming.