As far as the allocation of resources goes, my observation is that the resources available to classic (Kanner) autistics high or low functioning (that is with or without LD) are now shared with a larger group including Aspergics and self diagnosed adults, and that flubbery edged group “nd”, and on the whole the less verbal and less able are now receiving little or nothing. Their situation was always more extreme and the consequences of not receiving support always more terrifying.
@5zeds I'm not sure what resources formerly available to "classic" autistics you believe are now being shared with a wider group of "Aspergics" and self-diagnosed adults, but I assure you, there is almost zero support available for any adult who would fit the latter category, and precious little for children and young people in that group either.
Services to help autistic people with high support needs, non-speaking autistic people, or autistic people with learning disabilities (and their parents or carers) are not set up to provide assistance that is useful to adult autistic people with low support needs, without LD, and who can speak — that's never what those services have been for, and should not and cannot be what they are used for.
I don't understand how you think those resources are being used by adults with low support needs and inconspicuous communication difficulties. It's true that there's some very, very limited assistance coming from other pots for that group, but often what's asked for is things like adjustments from private organisations.
If a "high-functioning" autistic adult does, say, manage to somehow get a grant from Access to Work, and at the same time the government cuts SALT provision for non-speaking autistic children, it's unfair to blame the autistic employee for taking the children's resources, even if the government justifies those swingeing cuts by pointing to that piddling A2W grant as part of their spending on autism.
Autistic adults who generally seem to be sort of coping don't get a lot. Sometimes actually less than the standard NT person — even things like NHS mental health services that everyone is supposed to be able to access can be blocked off to you, if you have an ASD level 1 or Asperger's or high-functioning autism diagnosis — mainstream services will tell you they can't meet your needs because of your autism, but there is no service for autistic people in that category who have no LD.
When it comes to campaigning, awareness, public understanding of what ASD is — yes, I think some of the public discourse around neurodiversity is not reflective of the reality for many autistic people, and privileges a certain type of story from a certain type of person.
It's understandable that, since there's a whole subset of the autistic population who have a subtler presentation and have only been properly identified in the last thirty years (Asperger's syndrome entered the ICD in 1992), a lot of public attention would go to this "new", more numerous group, and especially, to the most extreme versions of the new conceptualisations of autism some of them put forward (since the extreme versions of things always get attention). And radical neurodiversity proponents who would advocate for abolishing all interventions to help autistic children communicate with the NT world would be the very extreme end.
I think it's playing into the hands of Tories and cost-cutters to blame either autistic activism, or high-functioning resource-hoggers, for the appalling cuts in services for autistic people with very high support needs and those who look after them.