New York Times had an interesting podcast recently where they talked about how so many children are being diagnosed with autism to the point where it's hurting the severely autistic student population (
https://www.nytimes.com/2025/11/24/podcasts/the-daily/autism...). There's a finite set of resources pooled for special needs students, and now most of these students have relatively minor symptoms compared to those with "profound autism" (which is a severe disability associated with the inability to speak or live independently).
I suspect this is similar - rich parents are doing anything for an edge in their child's education and can get any diagnosis they desire. It's an unfair system.