By 4 years old, my kid was on social media, because he went to a birthday party and a stranger took a picture.
Would be weird having everyone but the children go around the great grandparents when the great grandparents turn 100.
When they are on a soccer team, they don't take a team photo?
All because we are afraid a face is going to do what exactly? Reminds me of the whole 'don't put your last name on the internet'.
You can debate whether that's a good idea. You can even debate whether you think the connection is real (but I think the feeling of a connection is enough to consider it "real"). You can certainly debate the use of these images in corporate machine-generated ads... but deal with the first paragraph: I think we understand why genuine people might still post on social media.
or are the parents (which they most likely were) of your childs friends strangers to you? they should not be.
what bothers me here is that on the one hand we have this concept of stranger-danger, and on the other everyone is a stranger, just because you haven't talked to them yet? that doesn't make sense. calling the parents of my kids friends strangers just feels very wrong to me.