The criteria for diagnosing ASD today are vastly different from those that would’ve resulted in an autism diagnosis shortly after the abolishment of lobotomy, it is hardly surprising the rate keeps going up as you widen the net.
replies(6):
Yes, this absolutely. You can't study something after altering it.
The "treatments" for people with any kind of neurodivergence (real, or imagined) in the past were often interventions that destroyed enough of their brain or body to prevent them from exhibiting any neurodivergent symptoms (e.g. lobotomy, EST/ECT, teeth-pulling[1], etc).
[1]: https://www.amusingplanet.com/2019/01/henry-cotton-psychiatr...