Indeed. There is much controversy about this way of thinking, and about the methodology. See for instance [0]
[0] https://www.jasonhickel.org/blog/2019/3/17/two-hump-world
[0] https://www.jasonhickel.org/blog/2019/3/17/two-hump-world
But thanks for sharing this. Always good to learn the nuances.