The purpose of the "disorder" is to group common pathologies and their respective treatments (methods to improve).
Let's take high functioning autism as an example of a "expanding disorder". The "treatment" for high functioning autism is largely behavioural. Preparing for known stressful events, methods to stay focused on a task you don't like, practicing identifying and displaying emotions appropriately, etc.
> We could already improve ourselves without identifying as disordered.
Many people with high functioning autism don't see it as a disorder and view it as a "different thinking style".
We can (and I think should) "embrace" that, but that does nothing to improve difficulties such as dealing with a new situation, making friends, communicating with their boss, etc.
Similarly I've heard "everyone says that have trouble focusing, you don't have adhd".
Whether you have adhd or not, the ways to improve your behaviour are the same. Methods to stay organized, prepare your environment to focus, prioritizing, etc. apply regardless of whether "you really have adhd or not"
