Maybe it has to do with the US having double the per capita carbon footprint, and double the cumulative total amount of CO2 of China, and many multiples of India:
There's far more room for improvement when per capita is high than there is when per capita is low.
And the climate certainly does care about cumulative CO2.
Would have, could have, should have. But didn't. Trying to hold others accountable without getting one's own house in order just comes off as the blatant hypocrisy it actually is. Until we do better ourselves, we are in no position to call others out.
https://www.worldometers.info/co2-emissions/co2-emissions-pe...
https://www.carbonbrief.org/analysis-which-countries-are-his....