Maybe ADHD has "boomed" in """popularity""" because a disorder that used to be diagnosed as hyperactivity and a deficit of attention actually turned out to be a quantifiable problem with executive function which exists in a known part of the brain, can be quantifiably treated with medication and therapy, and if untreated results in very confusing problems with emotions and motivation for as long as you live.
It's not as if ADHD doesn't exist. I'm speaking off of what was apparently state of the art 10 years ago. https://www.youtube.com/watch?v=YSfCdBBqNXY
I'm hoping today, in a matter of hours, to get prescribed one of these new non-stim drugs, because the stuff described in that video very much matches my experience.
Maybe thinking that ADHD is made up has boomed in popularity because of the South Park and King of the Hill episodes that downplay it. Imagine learning medicine from cartoons.