Again, I would submit that nobody really believes this. Look at your own family. Do you all live in the same neighborhood with strong neighborhood-supported familial bonds? Probably not. Even when I lived back home my mom lived in one neighborhood, my brother another, my friends in different local munis. Today I live in another state to be near my wife's family, but the closest family member is a 20-minute drive from where we bought our house!

Modern people are spread out all over the regions they occupy.

It really seems like on this one topic people accept arguments on behalf of other people that they know with perfect clarity make zero sense when they try to apply them to their own lives.

I personally avoid living near interstates. The noise, the pollution & the walkability around them generally suck. YMMV.

Do you believe that people who can not afford a car can have the same long-distance family+friend support that you had? Do you think that your situation applies to everyone?

92% of American households own a car. So, plainly: yes, my experience was typical.