Will 15 minute cities solve the housing crisis?

The concept of a 15 minute city - where neighbourhoods provide life's essentials in 15 minutes by foot or bike is almost as old as urban planning itself. But recently, this idea has become a flash point for conspiracy theorists. So, while new developments are built at pace to keep up with Australia's housing shortage how should we be thinking about the cities of the future? And is there something sinister about keeping everything in the neighbourhood?