Yeah, most certainly.
> The median global person earns less than $3000/year
What does that have to do with anything? In plenty of places you can easily survive and have a good time with $3000/year, so not sure where or how this is relevant.
And how you get the "certainly over 50%" number from? You happen to be American too?
My bet is that of people living in functioning democracies, the percentage will be in like 20-25%.
Your post sounds like an assumption like "the people who live in war are a small minority so their position is an exception compared to humanity in general" when actually it's the opposite, the people who live in the well functioning first world democracies are a small minority so their position is an exception compared to humanity in general.
In the 60s-70s life in USSR was better than in China, India, virtuall all of Africa and Latin America.
It's not about boasting, it's about whether USA can rely on people wanting to immigrate to ensure that places like Georgia stay sufficiently populated even if population naturally declines - and IMHO they can.