I'm not talking about a garden city or walled fortress of any kind, and I said so above. I'm talking about a semi-rural town where people have valued nature and open space.
And no, destroying that to supposedly make housing for low-income people who are "fighting to the death for a place to live" will help zero of them. Because even if you gave the housing for near free, there are zero local jobs and zero local public transportation options to jobs, or even to groceries (nearest is 15min+ drive away). So, they'd need to jump up to meet the expenses of a two-car household, with car payments, insurance, maintenance, fuel, etc.. Plus spend hours commuting to work. Plus daycare, not cheap in the area. If you are that low-wage and have to support the automobiles and commuting, it literally costs more to get to work than you earn. You will have destroyed something of great value created over decades at vast personal expense, and helped no one.
The point is to put the housing where it makes sense. E.g., near jobs and public transport, and where it doesn't destroy open lands or literally endangered species habitat.
New York city could put plenty more housing right in Manhattan, but you don't see even the most radical pro-housing types suggesting they build over Central Park to do it.