I've had another think about this. I regret that I've disregarded the experience of other Autistic people who feel that the social model of disability does not describe their experience.
The core of what I was thinking is that I was always going to be who I am and how that is natural and normal and that the idea of a cure for me is offensive (it's like suggesting that I shouldn't exist). But why do I need my existence to be "normal" and "natural"?! There's internalised ableism in that.
Then I thought well what if I could have been another person altogether?! What if there was some distinct external environmental influence that made me substantially different to who I might have been?! I don't actually think this is likely given my family history but would that make me less desirable being who I am now...no it wouldn't.
My challenges in life (regardless of where they have come from or if they can be viewed as strengths via another lense) have shaped my mind to be more accepting and understanding of differences i.e. less likely to become a Nazi, so that's not something I would want any other way.
Regardless of how disability comes about it's still diversity and it's still valuable. I don't want a cure for me. If someone else wants a cure or a fix for their own challenges (even if the challenges only exist because of inaccessibility and even if they don't) then that's valid. However, if someone wants a cure or a fix for others (an individual or worse a group of people) when they don't want it themselves then that's not ok. That's ableist and eugenics.
Someone may ask then does it become ethical to search for a cure for autism. Firstly, I don't believe a cure exists. It is partly genetic and that is not in dispute. But most importantly, the vast majority of Autistic people do not want a cure. What the vast majority of Autistic people want is for more funding to be directed into accessibility and inclusion.
However, my whole point of this exercise in thinking, is that I contend that even if my disability could be cured or fixed, it wouldn't mean my life is any less valuable than anyone else's and no-one gets to decide that for me.