Eh this is true for American cities I guess, but rural America is filled with tradition and beautiful rural architecture.But America has no old traditional ways for the most part -- it's just a bland "corporate monoculture" like that quote says. The buildings are always modern and corporate.
The thing about American culture is for a very long time it consisted mainly of a connection to nature and practicality. We didn't have the time or resources to build beautiful palaces, huge Gothic cathedrals, and pretty cobblestone roads. So things got made out of timber and didn't last long enough for the future. Along with Americans distrust of the aristocracy they found simple rugged living much more pleasant than flagrant displays of wealth. Plus we didn't need to create our own beautiful structures because America is still and more so back then filled with some of the most beautiful woodlands and nature in the world, which Americans found much more engaging than architecture.
Now granted along the way this all got co-opted by predatory corporations looking to change the rural America into a urban economic powerhouse. But to say all of America is just a "corporate monoculture" is a bit of a disillusioned urbanite way of thinking.