The other side of the coin is that the price of the phone can be reduced by this post sale ad revenue. That’ll be attractive to a lot of that target audience that is not my generation either .
It took me years of living to come to the conclusion that paying more upfront ends up the better deal(though always looking for it to be on sale). Not only does it most frequently last longer but the day to day through the years totality of the user experience end up very substantially better. That is IME.