Per capita emissions are a distraction. The earth’s atmosphere doesn’t care how many people were involved. What matters is total emissions. On that front China leads by a factor of 4 or 5 over India and the U.S. which are roughly the same.
While I do agree that both need to reduce emissions, we need to endure inconveniences and move our tax dollars to clean energy, while they have to continue being poor forever or spend inordinate amounts of money to industrialize using clean energy.
Total country emissions are an indicator of population and lifestyle. Since reducing the population is not an option for most countries, the solution is changing lifestyle.