Not saying you’re wrong but in Tokyo most of the streets I mentioned have no sidewalk but just by the nature of being tiny they don’t need one - cars will pass

Not saying you’re wrong but in Tokyo most of the streets I mentioned have no sidewalk but just by the nature of being tiny they don’t need one - cars will pass at very slow speeds anyway. Agreed that it only matters if you can achieve high density, but part of achieving high density is designing for it, including not optimizing car traffic.