More Autistic people are being mainstreamed, rather than being locked away in attics, bedrooms, basements, and institutions of the mentally impaired, as was done in decades (centuries?) past.
Then again, you could simply be experiencing Confirmation Bias - like when you buy a red car, and suddenly notice a large number of red cars when you hadn't really noticed any of them before.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.