The design of homes, street facing spaces, walking areas, and how much car traffic people have to overcome to talk with neighbors greatly influences how easy it is to socialize and make friends in your community.
Removing the noisiest and most dangerous part of a community (cars) and it helps everyone be more social.
Not going to watch a video, but yeah, title checks out. I think Jane Jacobs covered this in the 60s, probably in “death and life of great American cities”