I too feel that there is harm in this autism affirming message, for many of us it is a disability, not just a difference. But like any disability, one doesn't trump the other so whether physical or 'invisible', both need some level of adjustment.
As an autistic parent to an autistic child there are probably some benefits in me understanding her world and some of her struggles in daily life as I've experienced them myself. But it probably also means I have at times found it hard to 'fight' for the support that my DD needs, as I've been too trusting in the system and too scared of conflict/not being 'liked' to push the Senco, been overwhelmed by the process (EHCP), missed social cues in meetings, not understood things said in meetings as my processing speed is affected at times and I get muddled.
The list goes on. I did find the strength to pursue and fight the EHCP and I did eventually stand up to the Senco, get the LA involved etc but it left me with burnout. H left me to it mostly, not sure if that was due to his ND or not, but me fighting the system as an autistic person was not easy. Not saying it would be easier for an NT person but I certainly felt out of my depth a lot of the time with it. It's also horrible hearing the abelist language used by so called professionals, having to keep your mouth shut. Yet the expectation is for the parents to remain strong and 'fight', do whatever you can, go to tribunal, get legal help, pay for specialists, etc. Like now, when I'm probably faced with no choice but to Home Ed, and not sure I'm the right person for it.
Years ago an experienced colleague of mine pointed out that most of the parents we were dealing with (I was teaching kids of of school for medical reasons at the time) were probably autistic themselves and were probably struggling with navigating the system to get support for their children. No one seemed to have thought of this, it was at a time before the genetic link was more publicly spoken about. Ironically I hadn't realised that I was autistic at this time, despite having a diagnosed child as well as working with similar children...