IMO, that remains to be seen. China is still adding new coal capacity roughly equal to America's entire coal capacity, or about ~160+GW, just in 2025(74GW)/2026(90+GW expected) while retiring almost none.
Capacity is less relevant than usage. It's not like you drive a combustion car by putting your foot to the floor on the accelerator and only modulate your speed with the clutch and breaks.
Chinese coal *consumption* seems to be trending down, not up, regardless of capacity: https://www.carbonbrief.org/analysis-chinas-co2-emissions-ha...