I read the posted paper. Please point out where the authors factor in improvements to how we elicit, diagnose, and catalog mental health problems today. I was specifically looking for it and couldn't find it. The paper mentions the historical increase in 1.2 and 1.3 but offers no context or mitigation for long-term improvements in mental health reporting. Their NYTimes source in that section only goes back one decade and starts right off with an exploding upward trend. That could absolutely be attributed to improved reporting standards when the problem got attention, but the authors don't acknowledge any impact of reporting improvements.

My parent comment was based on my experience as a teenager, compared to the very different way my teenage children are monitored and evaluated for mental health. It's night and day.