It was American capital and knowledge that lifted these people out of extreme poverty.
Or put another way, we're not talking about putting dollars in wallets. We're talking about putting food in children's mouths, clothes on their backs, roofs over their heads. Maybe even some education in those heads. Yes, I just used a "think of the children" argument, sorry.
Millions of potential Einsteins have lived and died as subsistence farmers or worse throughout human history. If any of us were born fifty thousand years ago we would not be savant geniuses bringing about the agricultural era - if we even lived to adulthood (highly unlikely) we would have spent our days chasing gazelle to exhaustion to survive just like the rest of mankind.
Surely the absurdity of someone like you telling the world’s poor that they ought to stay poor doesn’t escape you?
Keep the dialogue civil.
It turns out that industrializing a society creates a lot of pollution. That pollution, as we've recently found out, is responsible for "the massive humanitarian crises and greater suffering" we are going to experience as impoverished nations continue to industrialize (ie. get lifted out of poverty).
See: IPCC
https://journals.plos.org/plosone/article?id=10.1371/journal...
https://journals.plos.org/plosone/article?id=10.1371/journal...
The solution to pollution is more economic development, not less. This becomes even more true once demographic transition effects (like declining birth rates) start to kick in.
EKC works with pollutants that have short term, acute consequences. Think sulfates, nitrates, carbon monoxide, etc.
EKC has not been proven true with pollutants whose effects are less concentrated and whose effects take longer to realize (CH4, CO2, etc). The catastrophes I'm referring to have little to do with the paper you cited.
Case in point: cumulative greenhouse gas emission
http://www.climatechangenews.com/files/2015/06/Historic-emis...
On a per capita basis, China is doing less harm to the environment than those in the US.