I see this constantly on MN and I’ve experienced it in rl too. If a distressed child is perceived to be NT, the respond is generally that they should buck up or need firm discipline.
On MN the phrase is “assuming no SN”, as if any child ever has been investigated thoroughly by a psychologist and pronounced NT.
I’ve encountered it in school too. Ds was crying in class (needs to be less sensitive), felt he was being bullied because kids were jostling him in the corridor (needs to toughen up before secondary), struggled to concentrate through the noise in class (classrooms are noisy), etc. But once I was able to say the magic word “autism” all of these problems were suddenly valid and real.
There probably not great examples - there are lots more but they’re not coming to mind right now, but I don’t understand why there couldn’t have been some adjustments made for him as a supposedly NT child. But the attitude was always that he had to do better. He had been flagged for anxiety and was receiving psych support in school at this point so it wasn’t just me being that parent
In hospital settings, the word “autism” is magical too. Instead of scrawling “anxious mum” on the notes, they send him for the X-ray I ask for, back off and give me space to calm him.
I’m involved with my elderly relative’s medical care now, and I’ve started throwing the phrase “possibly undiagnosed autism” around to similar effect. I’m sure he is on the spectrum and I’m not just taking advantage.
But what strikes me is the general unkindness towards anyone a little bit different, when they don’t have a “label” (and I know that the accommodation and acceptance towards diagnosed NTs is a new and fragile thing). Like why would you not start from wondering why someone is distressed, why this small thing matters so much to them? Why does everyone have to be smacked back in their box?