If you're going that way you can reasonably say that capitalism is the context that makes some of these things disorders in the first place.
For example it's still not clear to me whether I consider my adhd a disorder in a vacuum. It definitely is here, I can't consistently execute the tasks that that will allow me to safely live.
But there have definitely been times and places where "weirdo who is good with kids, calm in an emergency, and knows a lot of infrequently-used-but-valuable skills" is a role people are allowed to occupy.
I'm definitely disordered within a context where each individual must labor effectively or die. There have been other arrangements though. This is probably true for some, but not all or even maybe most, mental illnesses and neurological disorders as well.
There are some life situations where having ADHD is probably a lifesaver. Those situations are likely far less common these days than 100+ years ago, so that aspect of humanity is now less relevant. But the evolutionary behavior will take a long time to eliminate itself...
There were parts of the book, The Highly Sensitive Person, by Elaine Aron, which were eye-opening to me in how they illustrated facets of myself (and how they showed the human value of some of those facets). There's definitely a place in the world for fixers, watchers, and people with unusual behaviors.
I suspect there may be uniquely valuable things to be learned or received from autistic people; but we haven't figured out how to bridge the communication gap. So while most people would assume that autistic means broken or useless, it's possible that the rest of us are just not ready or not capable of comprehending what's actually available.
For example it's still not clear to me whether I consider my adhd a disorder in a vacuum. It definitely is here, I can't consistently execute the tasks that that will allow me to safely live.
But there have definitely been times and places where "weirdo who is good with kids, calm in an emergency, and knows a lot of infrequently-used-but-valuable skills" is a role people are allowed to occupy.
I'm definitely disordered within a context where each individual must labor effectively or die. There have been other arrangements though. This is probably true for some, but not all or even maybe most, mental illnesses and neurological disorders as well.