This is also nonsense.
There is no "neurodiversity movement". 🙄🙄
Neurodiverse people are trying to get neurotypical people to understand them better. This all goes back to the "oh, we're all a bit autistic" nonsense.
The autistic spectrum is a spectrum if the different strengths and weaknesses if autistic people.
There is no such thing as being "a bit autistic". 🙄 Anyone on the planet would probably have some trait associated with autism. Autistic people have many, many of these across different diagnostic "categories" and that are unchangeable and present since early childhood i.e. wired in and not resulting from something else. Exhibiting maybe one or two behaviours associated with autism by people who know little about it does not mean someone is autistic.
It's so insulting to those who live with this that people still spout this nonsense when they could read up on it for free if they wish to. If they do not wish to, they should shut up until they have.
The autism spectrum is a spectrum (clue is in the name!) of how autistic people are different to each other. Not a scale from neurotypical to autistic.
Other issues like learning difficulties may overlap with the autistic spectrum like a venn diagram. We know ADHD does, as does dyspraxia etc. But neurotypical people are neurotypical people - on their own spectrum of course with different strengths and weaknesses - but they really need to stop saying stuff like "a bit autistic" or "severe autism" or "high functioning". It's appalling.
There is no evidence for this - quite the opposite. Studies show the people society classes as "high-functioning" are often in more distress because of the higher expectations on them plus the toll that masking takes. These labels tend to be about how much the person's autism affects other people (like parents, school, friends, partners) not how much it affects the autistic person. Which means less support for those who mask, which is so damaging. Please do not use such terms, they are awful.