Neither of these numbers sound great. Living past 80 sounds a lot better to me. Why did pre-agricultural communities have early deaths compared to us if "the ills that you highlight all came about following the establishment of agricultural societies"? They had to die somehow.
This is almost entirely driven by decreases in infant mortality. The article specifically cites the scenario of a mother giving birth while still carrying their last would probably have abandoned that child. Life expectancy for those that reached adulthood was nearly 70, roughly the same as world average now.
Also, using "life expectancy" as defined by present society seems biased. Does it really make sense to include infanticide in life expectancy in hunter-gather societies, but not include abortions in modern ones, where it's functionally the same thing? (this is not a moral judgment of either)
Ultimately though you are right that humans now do, to some degree, have longer lives than pre-agricultural humans. Evaluating this will come down to a personal choice between quality and quantity.
So people in rich countries are better off. Then the question becomes "Will the poor countries stay poor?" If they don't, his whole argument is wrong. (Also the "Everyone's poor, so there's no inequality! Hurray!" argument is a bit strange.) I'll bet that before China's wealth increase, he would have said China would stay poor.
The quote you snip says that the rich in agricultural societies live better than the underclass in those same societies, not better than hunter-gatherer societies.
How are you defining "poor" and why is it bad? How can one argue that people who only need to work ~15 hours per week are "poor". That is far richer than most the world today. The absence of gold or iPhones says nothing about the human condition.
Why is he assuming that had those same people stayed hunter-gathers, they would treat their women better? It seems like a completely unwarranted assumption.
The anthropological evidence (mostly observation of present day hunter-gatherer groups) indicates that hunter-gatherer groups have high levels of gender equality. Resource accumulation enabled by agriculture leading to gender imbalances is a possible explanation of this pattern.
You're also neglecting the massive population increases that he discusses. An extra life worth living is a net gain. The associated decreases in average wellbeing haven't held up because of better nutritional science and healthcare so there's not even a "repugnant conclusion" trade-off.
This is a different question entirely, evaluating the world as a whole instead of the average individual experience. It's quite possible that the increase in quantity of life that has arisen is or will become "worth it".
I’ve said before that understanding where our modern standard of living comes from, at a basic level, is a responsibility of every citizen in an industrial civilization. Let’s call it “industrial literacy.”
Industrial literacy is understanding…
When you know these facts of history—which many schools do not teach—you understand what “industrial civilization” is and why it is the benefactor of everyone who is lucky enough to live in it. You understand that the electric generator, the automobile, the chemical plant, the cargo container ship, and the microprocessor are essential to our health and happiness.
This doesn’t require a deep or specialized knowledge. It only requires knowing the basics, the same way every citizen should know the outlines of history and the essentials of how government works.
Industrial literacy means understanding that the components of the global economy are not arbitrary. Each one is there for a reason—often a matter of life and death. The reasons are the immutable facts of what it takes to survive and prosper: the laws of physics, chemistry, biology, and economics that govern our daily existence.
With industrial literacy, you can see the economy as a set of solutions to problems. Then, and only then, are you informed enough to have an opinion on how those solutions might be improved.
A lack of industrial literacy (among other factors) is turning what ought to be economic discussions about how best to improve human health and prosperity into political debates fueled by misinformation and scare tactics. We see this on climate change, plastic recycling, automation and job loss, even vaccines. Without knowing the basics, industrial civilization is one big Chesterton’s Fence to some people: they propose tearing it down, because they don’t see the use of it.
Let’s recognize the value of industrial literacy and commit to improving it—starting with ourselves.