I agree that autism is disabling, but that's in the context of a culture overrun with stimuli and complexity. Whether it's a disorder or not is almost impossible to determine, given how it is so inaccurately understood due to missing the vast majority of women and BIPOC who have the "disorder." I suspect the wisdom of evolution has kept the autistic and ADHD traits around for a good reason, especially given how many titans of innovation have been autistic, from Newton to Darwin to Jefferson and beyond.