Living, growing, changing cells are pretty damn dissimilar to static circuitry. Neural networks are based on an oversimplified model of neuron cells. The model ignores the fact neurons are constantly growing, shifting, and breaking connections with one another, and flat out does not consider structures and interactions within the cells.
Metaphysics is not required to make the observation that computer programmes are magnitudes less complex than a brain.
On the one hand, you can read it as a parody of late 20th century life - like, haha imagine a caveman clocking into work
but on the other hand, Flinstones and its far future counterpart Jestsons kinda suggest an inability to imagine anything different. Automobile-ized suburban development frequently gets presented an the human ‘default’. As though we just default to this, rather than it being one of many ways cities and society could be organized.