And I find it odd that the objective criteria the author chooses ("it was not an objective collapse in living standards, employment prospects, or opportunities for material security.") are mostly not applicable to teens, but to adults.
And to the extent they are applicable to teens, well teen employment has dropped quite a bit since the Great Recession, and is just now returning to what is was in 2007: https://www.pewresearch.org/fact-tank/2022/06/21/after-dropp...
The percent of children living in "poverty" also increased by a few percentage points (about 1/4 to 1/3 in relative percent) after the Great Recession, and didn't fall back to trend until around 2017. This would have affected today's teens during formative times in their childhood: https://datacenter.kidscount.org/data/line/43-children-in-po...