Valid points and keep in mind, a smartphone for many of todays teens is actually their only computer. A decent Windows laptop or MacBook Pro goes for 1,300 to 1,500 easily; it wouldn't be surprising if a teen forgoes that and goes with a smartphone instead. In fact, some of them do everything on a phone, type documents, browse web, research and selfies too. Also, using allowance and income from odd jobs could easily be their means of buying one. Its just kinda amazing seeing so many young people with such an expensive phone. I remember back in 2007 when the iPhone was launched and heard the price and thinking I would never be able to afford that. At the time, I was still a struggling adult with a flip phone getting support from my brother or mom with my data plan. I guess that's why I'm such a miser these days.Depending on your area, plus there are many parents who indulge their children and then there is the rare exception of a few who do odd jobs, save allowance and buy something their want. Not judging or anything, not dismissing your observations, just saying if a parent is purchasing a new iPhone 12 Pro Max for their children then there is something going on there, if the child purchased it with their own savings that is another.
A product such as a mobile phones has its pro's and con's it all depends on the individual's responsible usage. Not painting anyone person or group with the same brush.