People have been moaning about how we're all becoming socially isolated since the publication of the first novel. The art of socialising has been declared dying ever since the first VHS was available to buy and watch at home.
You're not offering anything more than an assertion that they're wrong, though. That is, you're using the same anecdata standard of evidence that they are: "My friends and I have cell phones but we talk to each other..."
More serious thinkers than you and I have made actual measurements that show our frequency of in-person, in-public type socializing and civic engagement really has been in long-term decline for many decades. VHS would be one of the culprits, yes, and now so would smart-phones, tablets, etc.