Actually autism is officially described and classified in the DSM-5 Diagnostic and Statistical Manual of _Mental Disorders_.
The rest of ad hominem, I will ignore. For one, I find the language insulting to people with mental health issues (even if one considers autistic people to not be among them), as if they're lesser people.
E.g. "They are going to wonder if I am a danger to them, and in turn, that mentality is going to cause direct harm and danger to me and other people on the spectrum." -- because people with mental illnesses are necessarily of "danger" to others?
>They are going to wonder if I’m going to exhibit symptoms of mental illnesses since I am autistic.
Well, they will be right to wonder it.
Even for the mental illness issues that you would agree to qualify as such (from depression to OCD), are commonly associated with autism, much more so than in the general population.
If you want to call Autism a “mental disorder” you would be correct to call it that, as it is a neurodevelopmental disorder and cognitive disability. It is not however a mental illness. The DSM V classifies a lot of different disorders, some of which are mental illnesses and some of which are not. Conflating that something being defined in the DSM V also classifies it as a mental illness when the writers of the DSM V were very careful not to use that language, shows the very misunderstanding which I am trying very hard to show you (and failing) at best, and intentionally misleading on your part at worst.
My objections are due to the societal biases that others hold against mentally ill people. My problem with calling Autism a mental illness is twofold. 1. It is factually and scientifically incorrect. Full stop. End of story. This should be enough for you, but whatever. 2. When you call Autism a mental illness you take a group of people who struggle and suffer and loop them in with another group of people that struggle suffer. Autism has enough social stigma attached to it already. When you apply more social stigma to it by attaching other labels to it, you are actively causing more harm than good.
It would be one thing to offend based on a factual argument, but you have neither facts nor a moral/ethical argument on your side. There is no reason for one to call Autism a mental illness other than a factual misunderstanding of Autism. To cling to that ignorance and claim superiority is both arrogant and egotistical. It lacks any semblance of empathy whatsoever.
Also, "disorder" is a more neutral word than "illness". Strictly speaking, it just means something is abnormal, not necessarily dysfunctional.