I think you have something here. I grew up in the country where people had to actively seek out activities and relationships, including with people they may not otherwise choose to be around. In the city/burbs, I actively chose to travel by foot/transit/someone else’s vehicle, even though it would have been easier to drive everywhere (I mean, sidewalks that just… vanish halfway to a destination? No transit east-west on major arteries? City planners obviously are prioritizing vehicle traffic).
But as a result, I’ve never felt isolated AND have the skills to connect with others who aren’t like me. It’s those skills that seem to have been going away as people hide themselves in their social media bubbles and behind their steering wheels. The same opportunities for socialization are still there, but they take more effort than people are used to making because there’s easier alternatives available than there used to be.
I think you may have missed the point I was making though— clubs and other pastimes didn’t make people less lonely; they only distracted people from their loneliness. Today the same distractions can be found via social media, so instead of all those other activities, people just need a phone.
But the anonymizing nature of social media means people feel more free to discuss their loneliness when they do self-reflect.