Earlier quoted context omitted.
Can you explain why this is a bad thing, or is it just “”the rich” bad”?
Not OP, but presumably it's because it could cement a permanent divide between classes. We still have quite a bit of upward mobility in the US, but health is a tremendous predictor of future outcomes, so gating that to the rich is dangerous to the stability of society in that way.
If we could make most children smart, productive, ambitious, courteous, civil, conscientious, honorable, strong... the value to society is probably high enough to justify covering it for almost anyone.