At least that's what I see here on the coast of Maine. Most everyone I know that sails, spent time on the water as young kids. They in turn, if they have kids, take those kids sailing.
And we have always taken friends from families that don't sail. Some of those kids do sail now.
The internet can't be that much of a demon, look how many of us baby boomer parents are online, even many that are off cruising are online for vast amounts of time.
Reminds me of my grandfather. He would lament my generation(boomers) that were raised on tv. He'd do his complaining from my driveway as he listened to the Yankees on his car radio all day long.
The more things change, they more the look the same to me.