Why not?
An organism can reasonably be defined as the minimal subset of a gene's phenotype that is actually capable of reproducing. On that view, an ant (for example) is not an organism, an ant colony is the organism. This neatly solves the puzzle of how it is possible for evolution to produce ants, since the vast majority of individual ants are sterile.
On that view, the minimal possible organism for a sexually-reproducig species is a mating pair. But a single pair of humans would not survive in the wild. At a minimum it takes a village (as they say). So a human village can reasonably be taken to be an organism, just as an ant colony can. But a village can't produce a technological society. At best, a village can subsist. So why is it unreasonable to consider (say) a city-state as an evolutionary advance on the village, and hence an organism in its own right even thought it isn't minimal? And so on through the Roman empire, the British empire, and the modern nation-state and multinational corporation, all of which are no less examples of the human genome's phenotype than the human body itself.