That’s just American suburbs, honestly. Many if not most subdvisions are designed to be pedestrian-hostile with the specific intent of excluding – shall we say – a certain class of person who doesn’t have access to a car, and are thrown up wherever a builder managed to snag a contiguous chunk of greenfield site vaguely near a major city rather than being planned and positioned to for convenience to mass transit and amenities.
Heck, I live in a old streetcar suburb, that’s basically in the city proper, and while it’s only a ten minute walk to the nearest grocery store, I don’t walk it because a) it’s a fucking Walmart and I’m not giving them any of my money if I can help it and b) it’d require me to walk along two busy stroads, one way while lugging sacks of groceries. I’d prefer not to get mowed down by somebody coming off the highway who’s not paying attention at the crosswalk if I can help it.