Also I did not link CFCs to acid rain. Acid rain was mainly from the use of heavy coal burning in the past. There were measures put in place back in the 80s/90s to reduce the sulfur from the coal, plus now lots of natural gas and other energy sources. So that is what reduced acid rain.

Still I agree acid rain is probably a big issue in like China since they still use a lot of coal, but are moving off of it.