In the 1920 most suburbs were still street car suburbs. Where street car company developed the land around the station.
Then the street cars went way and suburbs became ever larger and less dense.
Also zoning started essentially forcing suburbs and never let these areas develop out of the state of being suburbs.
What was built in the 1920 is mostly just fine. It really gets bad in the 1960s where everything started to be build for the car only.
But it gets even worse, if you look at classic US suburbs in the 1960s they look almost reasonable. Thin roads, houses reasonably close together. Then they started enforcing ever crazier requirements for the streets and ever crazier requirements for lots sizes and stuff like that.
This results in the already low density of 1960s suburb looking like Paris. Now you have suburbs that have literal highway highways between houses (where you can literally have 4 F-150 next to each other), with lots of distance between houses in all 4 direction, small houses not allowed, no duplex or anything else. Because of zoning literally ever commercial transaction requires a short car trip.