That is an oversimplification though. Good city planning needs good city planning. Also more people willing to not have a huge house with a large garden.
Yeah, I get that you love your garden. But this sprawling way of building cities is just so incredibly ineffective and wasteful. Hard to build less effective tbh.
Compare this to appartement buildings (not those weird 20+ floor buildings in the US, but those you see in Europe with 4-6 floors) with well kept community gardens and large balconies. You need maybe 20% of the space and infrastructure, thus enabling cities to build walkable&cycable neighborhoods and effective public transportation.