But... condo neighborhoods are exactly that medium density housing. Every city does need more condos in their existing neighborhoods if populations are able to grow. (Unless Covid-19 will reshape the trajectory of urbanization, and major cities will mostly shrink for the next several decades. That actually seems somewhat plausible).
But writing off all the sidewalk labs ideas as gimmicky smartphone integrations is pretty disingenuous. There were ideas for greener construction methods using more timber and less concrete, more space optimized for walking and biking instead of cars, interesting communal space arrangements to make spaces that can be heated in winter and converted to outdoor space when the weather is nice. There will always be some haters, but IMO all of these things would be amazing quality of life improvements in the majority of North American cities.
But writing off all the sidewalk labs ideas as gimmicky smartphone integrations is pretty disingenuous. There were ideas for greener construction methods using more timber and less concrete, more space optimized for walking and biking instead of cars, interesting communal space arrangements to make spaces that can be heated in winter and converted to outdoor space when the weather is nice. There will always be some haters, but IMO all of these things would be amazing quality of life improvements in the majority of North American cities.