The whole high rise situation in almost every U.S. city you described (i.e. small central cluster of high-rises) is more a result of insane zoning policies, not traffic safety. High density and peace and quiet really aren’t mutually exclusive, although admittedly 99% of towns and suburbs in the U.S. fail to build such places, largely, in fact, because of traffic engineering.
For example, I lived in a town of around 100k in the Netherlands called Delft for a while - high density, walkable, and far quieter than the two suburbs I lived in the United States.
Not saying the situation will ever change here. But it is possible.
Implementation definitely matters. There's plenty of quiet to be found in the Tokyo metro area for example, which is quite dense relative to US cities. The residential areas are pretty tranquil all day and aside from nightlife hotspots, big chunks of the inner city are absolutely dead at night.
For example, I lived in a town of around 100k in the Netherlands called Delft for a while - high density, walkable, and far quieter than the two suburbs I lived in the United States.
Not saying the situation will ever change here. But it is possible.