Earlier quoted context omitted.
The walkable townhouses and height-restricted buildings you're talking about (1.) only exist so long as the aesthetic/lifestyle value of a low-risey city balances against the demand for more housing and developers' desire to make money and (2.) make public transport trips take longer because you have to walk past more of your neighbors' low-rise buildings to get to a public transport hub and the bus/train/whatever ha…
You, sir, have never been to Brooklyn.
I think that you're living in Brooklyn and enjoying it, which is great, and idealizing it without thinking about how Brooklyn is actually changing right around you.
[The Brooklyner is a 51-story skyscraper recently built in Brooklyn: the http://en.wikipedia.org/wiki/Brooklyner ]