African traditional cattle herders are still a thing and they're still living in thatched huts with weave walls.
Elsewhere in Africa, Thatching is still an up market thing: https://www.africathatch.co.za/
Perhaps spend some time learning about the wider world before making such obviously incorrect sweeping generalisations?
UN data on housing somewhat disagrees with you. The somewhat is only because people living in such housing aren't starving/destitute, but they are still incredibly poor.
OP said they would be content with 40% less income for less work. That's fine, but I think it misses the point. On a large enough time scale, progress is so great that most wouldn't choose the past, nor would they choose our present if the future is substantially better. That's what I mean by "everyone wants more" ... it's what contributes to endless consumption rather than us working less hours when technology improves