Do people in US have twice better life? They don't, its just that the policy doesnt give a flying fuck about environment. The government spends more on military programs to defend from hypothetical weapons that dont exist yet, than it does on dealing with the certainty of climate change.
People here bitching about brazil removing forest, forest cover of UK is like 12%, one of the lowest in thw world. The 'ambition' is to plant like 2% more trees in 30 years. We just cut it down years ago, and so are off the hook.
You know what the wealthy countries should have done? Funded development of fusion properly, actually invested in renewables and shared technology with developing nations, had electric vehicles in mass production by 2010. Then you could do around and point at aome poor farmer fuck knows where trying to feed his family.
As things stand China has 10x more electric buses than the rest of the world combined, a couple Nordic countries have shown leadership in Wind. But most of western world is not just complicit, but a partner in crime, has actively enabled and protected their oil firms to commit literal crimes.