This is vaguely among experts (for autism and emotional instability): https://pmc.ncbi.nlm.nih.gov/articles/PMC11724683
This is not ruling out a causal link in the opposite direction, that autism increases vulnerability to traumata.
And while researching case reports on child abuse, i couldn't help to notice that many cases do - indeed - start with an autism diagnosis and only escalate later, example: https://pmc.ncbi.nlm.nih.gov/articles/PMC11886450/
While its true that parents don't cause autism... they can surely cause the diagnosis. Extra bad because it delays appropriate treatment.