It’s generally possible to find individual governments that do just about any specific thing better than the US gov, but that’s not to say each of those countries is better in every way. The best healthcare isn’t in the country with the lowest crime, least corruption, down a list where the 2nd country is then second on every criteria. Further only looking at US failures ignores how other counties fail in different ways. The UK’s land situation is seriously messed up and yet we rarely consider that when comparing governments. I am not going to say the US is #1, but it’s a long way from abject failure.

Also when you excluded say Nigeria and in fact most counties then every remaining country is going to seem worse simply because you just arbitrarily raised the standards. It’s not US exceptionalism to simply say few countries or groups of countries have landed anything on Mars which is freaking difficult. Sure, providing great healthcare is more important, but it’s also something very few counties have done well.

In the detracting from success by looking at unrelated failures misses my argument, at best it speeks to the likelihood of success not the possibility.