I'm in the process of moving to Boston and it's utter insanity. Housing here is like something out of Kafka novel. Now I empathize with my friends who lived in SF pre-covid. Build, Build, Build!! I do think it's important now more than ever with remote work to build more duplex / 3 bedroom condos. I'm 33 and I have no desire to move out to the burbs, but marrying and starting a family in a 2 bedroom condo isn't total…
I think the main issue is not the condo itself but where the condo is.
From my experience living in an apartment but with walkable area around me and several large parks within walking distance felt very much equivalent in life quality than now living in a house with a garden. If anything large park areas are usually a lot more interesting for kids than your garden.
I do think urban planning should incentivize "village" building. For x square meters of construction you must build y square meters of green spaces and z square meters of local commerce. Otherwise you just get Truman show suburbs.