I think encouraging deurbanization is a mistake. Urban areas are more efficient for almost all resources. What we need is making urban areas more attractive. Some people will of course always choose a lifestyle that prefers a big house, which we can't provide in an urban area, but we can address other benefits people see in a rural setting by smarter city planning. Sound insulation, so that neighbors are not a problem, green spaces in the city, train connections to recreational areas outside the city, walkability, neighborhood communities, all these things can be achieved with proper city planning without sacrificing the efficiency benefits of the urban area.