Neurodiversity is a bit different to most forms of "disability" and at the high functioning end, neurodiverse thinkers are hugely influential on our society and its development. That doesn't mean that they don't require appropriate support and education.
It is support (or the lack of) that creates a burden on parents and their families.
I don't work because there isn't a financially justifiable form of childcare that maximises DS's capacity to function and retains the financial benefits of me working. He's an intelligent, loving child and generally a great asset to society although can become overwhelmed at annoyances like birds singing.
Having an autistic child with a lower capacity to function in a society that doesn't support caring or respite must be extremely distressing and draining to parents. I grew up with a relative with high care needs but placid disposition for other reasons and the emotional toll was different. He also fortunately had clear care needs and it was probably the golden age of support during his young adulthood.
The mother's needs have to come first; she bares the physical risks of producing a child, and is most likely to bare the emotional and social toll.
But mothers don't cope because social support is inadequate. That can be changed if society wants to prioritise it
I adore DS and the only thing I'd manipulate for him as a person is to ease his frustration. I'd love for his threshold to cope with life to be higher. But I love who he fundamentally is. Creative, focused thinkers like him do advance society. Society would suffer if neurodiverse thinkers were edited out.
However part of the reason that there isn't a DC3 is because DS was such a bloody hard toddler. I naturally self-edited my family around what we could live with (another major factor was my SPD hips-t'other SPD, we collect both sensory and pelvic versions). That was done without awareness of autism being present or the requirement of abortion.
It looks like autism is too genetically complex for this to be a logistically viable option anyway and will remain a hypothetical debate.