I think she's talking rubbish too.
My daughter would probably fit into the category of too many extra curricular activities. At 9, she does 18 hours training for gymnastics a week (she competes, her choice), an hour of ballet and she stays late for school once a week to do choir. She also goes to breakfast club to allow me to work. But I don't think this causes her to be ill equipped for coping with the adult world. At 9, she can make her own breakfast, make me a cup of tea, go to the shops to buy me something I need, plays out in the street, goes to the cinema with friends and no adults. She can help with many of the household tasks, like putting on a load of washing for me. In short, she is well on her way to becoming a rounded adult.
I do teach A level students myself, and so many of them are not ready for adulthood, they are babied. But I don't think this is down to extra curricular hobbies, I think that just confuses the matter.
As for the second, yes I think some parents are clueless about IT. I'm very aware of the Facebook functions, and how to hide posts etc, but so many of my friends seem to think that if they're friends with their children on Facebook, they'll see what is put on there. They seem unaware of the custom button, and as a teacher I know many students make great use of it to prevent their parents from seeing stuff they don't want their parents to see. Many run two accounts - one suitable for family, and a second hidden one that their parents don't know about!
That said I agree that there are far more important things to worry about than this!