I'm just trying to work out what you are saying, are you saying that you don't think that it's always autism then, just behaviours derived out of undesirable factors and it's over-diagnosis?
I say that because you are saying 'mimic neurodivergence' in paragraph 5?
Wow. And you claim not to be prejudiced!
I just want to pick this apart for a minute. My youngest child is a girl who has always enjoyed board games, loved being active, she now plays her sport for the county and for a local premier club. She is autistic but was an early talker, has to wear noise cancelling headphones all of the time. She couldn't cope with the uncertainty of primary school, particular triggers were things like Rock Stars time tables, she's also dyslexic and this affects numbers as well as reading. She was always sat by the disruptive children because on the face of it she was compliant and quiet, she was targeted by bullies and was bit at school on at least 2 occasions. By the time I stopped forcing her into a harmful environment she was refusing to eat and after getting her dressed for school on a Monday she was so overwhelmed that she couldn't get undressed without a meltdown, she slept on the Floor in her bedroom fully dressed. She had rituals where she had to go around her room touching several things and saying things before she could leave the room and then I had to walk her to school when she was crying and trying to run back home. School said she was fine. She was 7 years old. No access to the internet to misdiagnose herself or to ramp up her anxieties ffs.
She has been out of school since then and has access to OT and SALT, not because she can't talk (or because she wasn't an early talker!) but because she doesn't understand receptive language. The OT is to help with her sensory processing differences.
She will do GCSEs just like everyone else will and she is going to look at local colleges to see if there is something she is interested in.
She has an amazing social life and peer groups through her sport.
I don't dispute that modern life makes things more difficult for neurodiverse people but I do dispute your repeated suggestion that school is no different from 20 years ago. Did you have to do your timetables timed to loud music? (one of multiple examples) and that people are misdiagnosed.
I also dispute your idea that school is necessary and that kids who don't conform to schools won't succeed in life. It's narrowminded and simply untrue.