Earlier quoted context omitted.
I like this framing of the zoning issue much more than “build build build on every scrap of land you can get your hands on”. Ownership of land is really important for ensuring everyone in America is literally bought into the American Dream. Until you’re ready to buy a house, I feel no compunction forcing you into high-density housing in the meantime (paired with greatly increasing low-income mortgage assistance).
You can own a home without owning the land. It's pretty common in denser parts of the world. I recall a wealthy family in Padova, Italy where I lived that had a flat on the 3rd floor of some building right in the historic downtown. It was both large and very nice.
To me a home would mean no shared walls/floors/ceilings with other tenants.