No I'm sorry but that really isn't it.
For starters, the diagnostic criteria for autism do not mention empathy once. There are correlates between those diagnosed with autism and lower trait agreeableness but there's no formal link that's been found so let's just drop that myth and be done with it please.
Second, what determines one's sense of morality is far more than just agreeableness, ALL the big five traits impact moral judgment.
Not with me. I have no issue acknowledging Barb slept in the bed she made. That woman too is evil and she likely could have avoided this fate if it wasn't for her failures as a parent and profoundly inappropriate relationship to her son.