Having taught teens for 20+ years it became really obvious that a few things were changing and that we are still in that flux.
Society has changed. Kids get given a lot more autonomy of thought, if not actions
Parenting has changed, is more transactional these days. Again kids have more autonomy, choice.
Science has made leaps and bounds, Ed Psych should have but is failing to keep up with increased demand.
A combination of the above allows all sorts of errors, from late or no diagnosis for those in need to mislabelling of those with poor behaviour caused by nurture rather than nature.
Add to that the constantly changing shit show that is educational expectations, governmental interference, ridiculous goals (like the famous all kids should attain above average results) and the fact that new teachers are now also a product if the changing times - few old lags remain.
Think of it in context, social media, instant gratification, cult of the individual, downplaying the importance of actual skills and the constant demand for both attention and respect.
It is really hard for anyone to find themselves in amongst all of that. And with all the requirements not to blame, to find fault, the increased desire to explain any aberration as a medical need, it is inevitable that the diagnosis of ND has increased, even if sometimes for the wrong reasons, missing those who have most need.
God only knows how bad it will get. As the one thing that is missing is the idea of personal resilience. Not as the only thing but as a needful thing. Too much handwringing and finding ways to 'do for' instead of the longer route of each child finding their own coping mechanisms.
And yes, I was involved in SENCO, taught a lot of the brightest for many years and ended my teaching career teaching the kids who had failed GCSE maths and English multiple times. Their lack of self confidence was horrific and the stories they told of the attitude of their school towards their repeated failure more so.
Those kids, the big and burly physically confident sport players who openly cried in class when asked to do basic math, killed off my teaching career. I joked about it at the time but I really did spend my days torturing already scared kids.
Sorry. That went off on its own a bit. Bottom line is that this is what we as a society have grown. A few generations of people for whom rights are not necessarily couple with responsibilities, for whom an external excuse is always acceptable. The system has really let them all down, ND or not. We should be able to do better.