Try to envision humanity, not as a carbon copy of the same template, neuralwise, but as a adaptable to circumstances by shifting neuro-sub-group-proportions as a FFT curve mapped to the cycle.
Those that were able to drag the society towards the part of the cycle that is most adapted to their lifestyle, got rewarded. These adaptions to the various stages of the cycle, is what we call mental sickness now - or neuro diversity.
Now riddle me this. The cycle produces a creature, that is optimized for war. No compassion, no obsession but the one for the fight, no love, but for abstract concepts like the group, the country.
How to integrate such a element into a society? If a facist, is just a mental-adaption to a world were the roof comes down every generation, were does it have a place in that city on the hill?
Neuro-diversity is just a placeholder for a problem that is slowly recognized, but in the end, we will have to rewrite ourselves.. its the only way to get rid of lots of baggage.
The schizophrenic living in the cardboard box outside of your office, is optimized for dangerous times, hostile environments, wandering great distances and improvisation. It could be useful if retrained and forced to contribute, but then again, is neuro-diversity a idea, that has a willingness to invest behind it.