You haven't gotten to the point of proving that the "teens" would be correct to disregard their privacy, or that the "old generation" would be wrong to care about it.
I don't believe the behavior you're describing actually falls along generational lines, though, rather than technical competence or awareness. It isn't only "teens" who use social media, nor is it only "old people" who are concerned about privacy. In fact, younger generations are leaving Facebook and social media because of privacy concerns and the negative effect it has on their lives.
Your arguments here are stereotypical ageism and lack enough nuance to be convincing.
I don't believe the behavior you're describing actually falls along generational lines, though, rather than technical competence or awareness. It isn't only "teens" who use social media, nor is it only "old people" who are concerned about privacy. In fact, younger generations are leaving Facebook and social media because of privacy concerns and the negative effect it has on their lives.
Your arguments here are stereotypical ageism and lack enough nuance to be convincing.