Problem is probably not that "everyone has adhd now", but that everyone gets diagnosed now what was mostly ignored back then. I'm a genx-oldfart and I was told my whole life to stop being so "weird" and "be more like the other kids". I only got my diagnoses with 50+. Useless now, but at least i know i'm kinda "normal". Just differently wired.

And yes, I've heard that the public health diagnosis can suck ass here (germany) too. Waiting-times for psychiatries are sky-high, and most don't even do adhd-diagnosis anymore because of that. And paying yourself is not for everybody.

So yeah, I hear you. Knowing that MUCH earlier could've changed a lot of things. But that's what happens when knowledge evolves. Things become more "mainstream" and that has downsides too. No light without shadow.