It is indeed possible to have a city full of low-rise buildings that is still compact enough for excellent transit service—but only if most side streets are used for mid-rise buildings instead of houses.
The soon-to-be tallest building in the nation not located in New York City of Chicago has a structural issue that required a pause on construction. The issue is not expected to be catastrophic, however.
Los Angeles' new Wilshire Grand tower is tall and impressive. But, in reality, it's about 100 feet shorter and perhaps less impressive than the arbiters of skyscrapers say it is. Whatever the definition, it might be time to quit venerating height.