I find this part to be a really strong highlight of our change in perception of autism and what it means to be "autistic" or "on the spectrum."
Perhaps due to the broadening of the spectrum or just an odd association with success and spectrum attributes, we now strongly associate intelligence with spectrum. Historically - perhaps due to a narrower definition of autism - the inverse was true. It's understood now to not have much strong correlation with IQ at all, but apply fairly distributed in a way similar to general population, certainly not skewed one way or the other in a strong way.
Autism isn't a scalar. One is not more or less autistic than another. It's a multidimensional vector space where each individual has unique needs and disabilities throughout that space.
We also don't really talk about the IQ angle because, again, eugenics and elitism. It is a fact that some or many autistic people are incredibly intelligent, but it is exclusively allistic people who get hung up on this point. For autistic people, it's just the way things are and we have to make do, just like with everything else in life.
Turns out when a lot of people want to murder, sterilize, experiment on, or genetically engineer you, you get pretty sensitive about other people using actual, factual, literal Nazi eugenicist ideas to describe you.
That's why everyone should be using the terms that autistic people choose for themselves. So that you're not continuing to promote, again, actual Nazi war crimes as a way to distinguish "good" autism from "bad". That's why we've purged Asperger's as a diagnostic label.