I really expect the next generation (I guess, kids born in the last 8 years) to launch a major backlash against over-sharing and pretty go back to the roots of relationships: exactly how you said it.
I do think that for young people, "the people who is around" will not be necessarily people near in the physical world. Teenagers mainly communicate through chat groups, and work trends don't seem to go towards encouraging more physical presence.
Thus a reaction against current social networks would take the form of using more private, ephemeral channels (think Snapchat), and reduced, more controlled usage of public-facing ones (Tweeter, Facebook, Instagram).
Even if it's just shared with "Friends", most people will Facebook-friend a much wider range of people than who they would consider friends in real life. It's not just the close friends and family members who, a couple decades back, might have got a chance to thumb through the family photo album. It's also often your co-workers, friends-of-friends, and that person you got drunk with in a hotel bar 6 years ago and sporadically chatted up on Facebook Messenger for a few months after that.
Even if nothing practical comes of it, I wouldn't at all blame kids who grew up in the Facebook era for being pissed about it. The harm isn't in what people who are seeing it are doing, the harm is the over-sharing itself.
I think best case is there will be a generation whose only “online presence” are the stuff about them from ages 0-10 that their social media obsessed parents posted before the kid could acquire any agency in their own online life.
For a parent, making choices on your child’s behalf is kinda part of the deal.
And this person has made the decision for their child that whatever social media company is not going to own their child's image. What is is "bizarre" about that.
I hardly think caring for a child and letting a corporation own their image are even remotely the same thing.
If she had said this I see no logical discrepancy, but to couch your logic in terms of a child’s lack of consent is the point that makes little sense.
And pretty much everyone I talk to about this mentions that they do those status updates and photos for family members more than friends, and that they keep up with friends differently.
In fact, I keep up with all of my friends through direct messages on one platform or another or IRL.
The only exception is Twitter because I feel like you can get into interesting conversations on there...I just wouldn't get on there to share stuff with friends from IRL.
It's also not something most people are going to find out about, because, yeah, probably more-or-less impossible to monetize, and therefore ain't gonna be advertised.
I've also been involved in some experimentation with private Slack groups, but I can't say it's a great option. For people who don't want to be checking their smartphone constantly, it feels like this wild uncontrollable deluge of communication. And people who don't want to install an app on their smartphone quickly stop bothering to go to the website, either.
I have 3 separate group chats I share stuff with: 1. Family 2. friends from uni and 3. colleagues from old work.