But in America, if you want half a pound of pastrami you're probably going to have to get in a car to get it unless you live in one of the few areas that still follows that sort of dense city planning.
To each their own.
To me, the "hellish landscape" is the NYC subway system (arguably the best in the US).
While I live in NYC and not LA, I'm a frequent visitor to LA. I'd gladly sit through LA traffic over riding the NYC subway. Sitting in my own personal, clean, climate controlled space, listening to music I enjoy.
I would gladly use Seoul's subway. I only grudgingly use NYC's (and nowadays, I bicycle as much as I can to avoid using it).
Just out of curiosity, have you ever been to Tokyo? I feel I've heard good things about its public transit but have only visited so briefly I didn't get much chance to use it myself.
FWIW many discussions that criticize any aspect of NYC’s subway system often gets shut down with “but we have 24/7 service and they don’t”. Personally, I feel 24/7 service is a contributing factor to the NYC subway’s problems.
When I think "hellscape", I think of this, https://en.wikipedia.org/wiki/Agbogbloshie
Trains and trolleys did allow for some suburban growth - but the sprawl didn't come into being until cars became the norm for transport... specifically, commuting by train and using cars for leisure could have been the world we live in, rather than this hellish landscape where cars are the norm for getting to the work or picking up groceries.
This may differ from your world view but please just compare the west to east coast where most of the eastern cities were built first without cars in mind and only later expanded - vs. a lot of west coast cities that have always been car first.
The difference is extremely stark.