In developed countries things haven't changed that much.
If you look at London (since that's essentially the article), population has actually only reached back to its 1950 level.
But attractive cities can now pull people and investment from a global pool of billions of people and thus the market does its thing and prices move accordingly.
Be careful of that though. Urban is very broadly defined by the census. I live in a 7,000 person town 40 miles outside of a major city. Myself and 2 neighbors are collectively on 75 acres and are adjacent to conservation land. This area is considered urban.
I haven’t seen recent details but as of a few years ago, there was an uptick in college educated young people moving to a handful of mostly coastal dense urban cores but the overall urbanization trend in the US was rather limited.
If you look at London (since that's essentially the article), population has actually only reached back to its 1950 level.
But attractive cities can now pull people and investment from a global pool of billions of people and thus the market does its thing and prices move accordingly.