I have a hypothesis I've been playing with that would say that snowflakes and the semi-autistic are new and not normal human variation.
Lack of competition and lack of rough play reveal poorer brain development, especially in boys. Education has been forced to be "girl-friendly", in ways which are unnecessary, since girls and boys had already grown comparable in performance before this heavy-handed manipulation came in. As it turns out, treating boys like girls is bad, and treating girls like "girls" is bad. Not just for measurable brain development, but for personality.
For example, fatherlessness predicts poorer success, I think due to a woman raising a child (babying), a single parent raising a child (e.g. no time or money), and the lack of the sorts of personality traits unflinchingly brought to bear by a man (setting and enforcing boundaries), a second person, a second biological parent, and a father. This is especially true in boys. Being raised in and educated by the sorts of systems in place today -- by women, gently, emotionally, with poor rules definition and enforcement and without accountability -- have made children demonstrably brain-damaged and socially ill-equipped.
This is due to women on average having abysmal accountability. This is true for "raising" children, by offloading it to education or culture. Offspring used to be handed off in increments to the father as they grew up, for real-world preparation to go from nurturing a child to raising an adult.
This stunting hits boys first and hardest, and since we don't care about boys or men, and women aren't supposed to be held accountable for anything, we don't care. Now we've had a generation of stunted adults raising stunted children in a stunted environment.
It isn't the broadening of the definitions of personality disorders, or the increasing awareness, commonness and quality of diagnoses which is revealing more problems, but an actual new class of problem that exhibits itself like the things we already know about.
I posit that there aren't all that many more autists out there, but there are many more people broken in ways that show themselves like low IQ, antisocial behavior, criminality, ADHD, autism, narcissism, sociopathy, etc. Some act like, or are, what we already know, and it only "confirms it" when some of the traits can be treated with what we know of, such as ADHD-like symptoms being treated successfully with Ritalin.
A lot of things we diagnose using earlier techniques are not all some sort of genetic trend or some mysterious societal illness, but are in significant part problems of biology and personality which are newer than we think, and which are caused by us.
This hypothesis can use you, the reader, as evidence. Do you feel bad? Are your feelings tender? Are you angry? Were you raised by women and educated by women? I found a way to show that they are, to show how people with poor male role models aren't as emotionally healthy or successful as they could be, as they should be.
Since exploring this hypothesis, and I'm not/never done, I've been looking at how others who were raised better act, how they help others, how others help one another, how others help themselves and if there are any trends I can spot and describe. You know.. finding a vague problem, narrowing it down to see if it's just feelings, describing it, holding it up to the world to see if it's real, then having the accountability to demand things be better by looking for solutions. Like a man.
Maybe we should oppose drugging "those misbehaving boys", and give them male teachers and male role models, teach them that positive masculinity is actually real, bring in male-friendly education, and who knows what else.
Maybe we could one day admit that women as a individuals an be imperfect, that women as a demographic can be maybe slightly included in blame, and that femininity can be toxic.
Or maybe, just maybe, that men matter.