This is a massive oversimplification of both autism and ADHD which approaches uselessness. Impulsivity is one possible symptom of ADHD, but doesn't even begin to describe the experience, and by itself paints an incorrect picture of the experience. Same for autism and structure. I know plenty of people with autism who absolutely do not deal in structure.

I know it feels nice to be able to craft a simple narrative, but this narrative feels more harmful and misconstrued than useful.

I have autism and have a lot of trouble with routine and rigid timelines. But I also have ADHD, so I suspect there is some internal struggle there. I want to have routine for a lot of things, I just can’t seem to make it happen.