It's more like your argument forgot to account for fossil fuel demand elasticity and the reason why the developing world emits less CO2 per capita. It's not because they are enlightened minimalists who care more. It's because they are being outbid by the developed world.
For every amount the developed world cuts fossil fuel usage, it makes it cheaper for everyone else to buy. Price goes down, demand goes up. Usage doesn't go down, it shifts. This is a self defeating strategy. Your theory of global emissions reduction only works if no one changes their behavior in response to supply/demand changes.
https://news.ycombinator.com/newsguidelines.html
If you know more than someone else, that's great, but in that case please share some of what you know—without putdowns or snark—so the rest of us can learn:
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...
A bit ridiculous to claim that global warming is caused by the dirt poor and the not yet born 'wanting to consume like Americans' when it's obvious that at least half of Americans are determined to continue consuming like Americans whatever the cost.