I have said no such thing. I have said that in a suburb, most people won't want to do that. But that doesn't mean nobody will. In every suburb I've lived in, there has been a mix of single family homes, townhomes, and apartments. Some suburbs are even evolving to the point where they have a core area that is basically urban, with almost all buildings being high rise. I have already said that such things are to be expected over time.

> if there are many people who want urban areas and not enough housing to accommodate, would you support expanding them

If the urban area is already fully built out, and it acquires the additional land legally on the open market, sure.

But much so-called "urban" area is nowhere near fully built out. For example, much of the city of San Francisco is still fairly low density, with little or no high rise and many lots still being single family homes, and is kept that way by restrictive zoning, even though there are multitudes of people clamoring to live there. Before expanding the city out into the suburbs, I would say the city should first allow more people to live in the land that is already part of the city, and adjust its zoning to make that possible.