I think maybe the issue with this for me is that this binary leaves out so many people, including me and my family. I've also noticed (not saying you've said it), that there's an assumption that everyone who is diagnosed as an adult is someone who broadly functions in line with NT expectations and struggles socially, but is otherwise independent.
My mum was diagnosed with autism aged 65. She cannot live independently, isn't always continent, has no sense of danger or boundaries, cannot work, isn't fully literate and now has a carer. She has put herself and me into plenty of dangerous and or life-threatening situations because she does not understand them, and I grew up in an abusive household as a result.
Mum is fully verbal, but can be violent on occasion. She has a social life and can manage aspects of her personal care, but not all. She doesn't fit into either of these categories often described on this thread, in the same way that Murray, from the new BBC documentary on autism doesn't. Despite my mum having at least level 2 support needs, she would have never been diagnosed if I hadn't been diagnosed later in life. Women are so often overlooked, despite it being 'obvious'. I was simply her carer, or one of the many abusive and predatory men in her life would 'care' for her.
I have level 1 support needs. I'm nothing like those needing 24/7 care, but I'm nothing like my mum either. I have better social skills than she does, but I'm way more anxious. I have rigid obsessions, she doesn't. I get easily tired around people, she doesn't. I cannot regulate my own temperature well or sense when I'm hungry, she can. Both of us, as well as anyone else without language delay prior to the age of three, are classed as what used to be Asperger's. The problem with that is that aspergers often becomes code for bad social skills, with the idea that the other impairments seen in ASD are basically absent from those who are classed as 'high functioning'. This isn't always true. Even if we end up using ASD versus profound ASD, I wonder whether the line would be drawn, at which age, and for whose benefit.
I've accepted that I'm always going to rely on community support rather than medical or government support for my disability, and I am privileged in that I'm articulate and can often (but not always) fend for myself. I'm worried though about people like my mum who seem to be neither here nor there when it comes to these debates, what are they supposed to be?