That one change alone would make a huge difference, yes. It would ruin neighborhoods. I know a person with a SFH in the geographic center of San Francisco. It's

That one change alone would make a huge difference, yes. It would ruin neighborhoods. I know a person with a SFH in the geographic center of San Francisco. It's RH1 zoning. She would suffer greatly from "zoning good for up to four units". Her street is peaceful. You could stand in it and play ball, not that she does. Free parking is plentiful. There are no loiterers or buses. Usually there are no pedestrians or moving cars. You'd take all that away from her. She is surrounded by transit, not that it matters to her. She is too vulnerable to safely use it. There are two different MUNI lines and several different bus routes within a distance that many people would consider to be short. Transit expansion would be completely useless for her. I don't think she'd mind shutting down the transit. She would be harmed if her environment were to change. Adjustment gets more difficult with age. Major change, like moving out of the area, might put an end to her independent living. It would also separate her from her community, particularly her church and some family.