Yes I did read it.
Should we say cultures? We are doing it with race and sexuality. When there is a major economical difference. Nothing wrong with classifying with First, Second or Third.
But the basic and current “fundamental” of how we currently live. Such as;
“subsistence farming or hunting and gathering while afflicted with painful diseases, occasional starvation, and commonplace violence, rape and revenge killings found in most human tribal societies”
Are still found in all society’s. So one grows rice and one drives to the office.
Having nothing to do with a nation-state level of development. At least not yet. Though we would like to think that.
If there is a thousand people living in poverty or one. There is a difference? No, there is still poverty.