The word dense is in the second sentence of the wikipedia article on cities. It is inherent to discussion of urban transportation. You seem to be using the word

The word dense is in the second sentence of the wikipedia article on cities. It is inherent to discussion of urban transportation. You seem to be using the word city loosely, but it's a rather specific term. Even though I agree the policies here apply to a small fraction of the world's area, it affects a sizable fraction of the population.