2 & 6 & 7. access to airlines (and travel in general) was a net positive for meeting new people. Suddenly people could meet and get to know far more people than the handful of folks in the town they grew up in. Travel is probably on the best ways to meet new people and gain relationships and being able to pack up and move to where your new friends/love interests are is a good thing while communication tech lets you keep in touch with people who are in different cities/states/countries and maintain those relationships
3 & 4. People have to depend more on others to do their farming for them, but if you're working the fields you can't be out meeting real people face to face either. You're much more likely to have a social encounter at a grocery store than a grain silo. the hours you aren't spending growing your own food means you have more time to be with the people you love
5. independence is good and learning new skills means going out to new places to practice them or for supplies and equipment where you can meet other people with similar interests. It's the parasocial aspect of youtube that's most harmful.