Why is Autism considerd a disorder?

It helps to look at the definitions of what a disorder actually is:

https://medical-dictionary.thefreedictionary.com/disorder

A disturbance of function, structure, or both, resulting from a genetic or embryonic failure in development

Our brains failed to develop in the way neurotypicals do, resulting in persistent challenges with social communication, restricted interests and repetitive behavior amongst other symptoms.

It is a medical term for it but I understand a lot of people dislike these as they sometimes perceive negative connotations to them and want to have something more comforting to use as a label.

To qote Bill, "a rose by any other name would smell as sweet" - i.e. call it what you will but it remains the same thing unfortunately.

In particular, I struggle to understand the “it’s society’s fault” argument as an explanation for sensory problems and the struggle with focus and concentration.

Not that I think it’s valid to blame 99% of the world for my inability to build social bonds. It has ruined my life but it’s hardly anyone else’s fault.

I agree. I’m only sad that so many of us get treated badly but it’s also that medicine is only learning about neurodiversity. And the society knows little about it, misinformation from social media or hate is not helping either. 

I agree. I’m only sad that so many of us get treated badly but it’s also that medicine is only learning about neurodiversity. And the society knows little about it, misinformation from social media or hate is not helping either.