On Robertston's global field chart

In Roland Robertson’s “Globalization as Problem,” his model of the global field (p95) leaves something to be desired in my opinion. Namely, it seems to gloss over some things by setting equal culture and nationalism. There is more than selves, national societies, world societies, and humankind. Many nations are more heterogeneous than homogenous, and while he identifies “individual-society problematic”, there is also problems between local groups within a given society. And I don’t even mean ones like a globalized religion that arguably could fit into a “world system of societies” perhaps. I think the chart does not depict the plurality of societies beyond the individual level but under the national level.