Yes, sure, not
necessarily to do with 'overpopulation' - but as population grows, so do our cities. That has been the way of Sydney, Melbourne, Brisbane, etc, over the decades. None of these cities were as big or as crowded as they are now, not when our population was at 10 million. The same goes for many of our country towns, new suburbs, expanding shopping centres. At least those that have employment opportunities and desirable locations.
I agree that concentration in cities is not desirable (at least for many of us, including me); I don't agree that the total world population is a significant driver of the degree to which people like us are forced to tolerate it. There are many factors; the sheer numbers of humans alive is not one of them.
I remember that Politicians were pushing for decentralization of industry and employment decades ago, but it seems that very little came of it. You need suitable locations, ports, etc, in order to transport and receive a high volume of goods. This probably means that Sydney, Brisbane, Melbourne, etc, remain as centres of industry. So business opportunities and employment are most probable going to continue to be focused in these places. As population increases, most likely through immigration, our cities are only going to get larger.