https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2518049/
https://www.frontiersin.org/articles/10.3389/fnhum.2010.0022...
Also your own sources contradict the claim "Autistic people were never thought to lack emotions".
Where?
Also your own sources contradict the claim "Autistic people were never thought to lack emotions".