This is just a misunderstanding of statistics. Something being true for the average doesn't mean it's true for separate points.

But in average that's a bit like calling homosexualism a disability.

I like the border between disability and just neurodivergence to be drawn where it needs to be cured with medicine or you turn into a vegetable or can't survive. Like with schizophrenia, or maybe BPD. With autism and ADHD most of the problems are from trying to follow procedures for people who are different and imitate them, and most of the solutions are about teaching people with these conditions to drop those imitations and know themselves. I mean, medicine helps, but the problems it solves are too mostly about network effect.