Well, it is true that genetics play as strong a role in neurological miswirings as they do in neurological strengths, and sometimes an issue that may be easily overlooked in the parents because "it's not so bad" results in a child with a more severe form.

My cousin married a guy who was "weird." Many, many decades later in discussion he noted he had self-diagnosed as autistic. He was highly functional. They had two daughters, and I think each of them might fall on the Asperger's spectrum but you'd need to look hard to see it. The younger daughter, who was more "weird" than her sister, had a son with autism and he's quite badly affected. Intelligent, verbal and affectionate but severe behavioral problems. And his father has addiction and impulsivity problems--highly intelligent, a software designer, but unstable. And it took me a lifetime to realize that my cousin herself is likely on the spectrum. Now I understand what her "cluelessness" and lack of--uh--emotional intelligence might be properly described as.

So the third generation inherited a real genetic swampload. I think he'd be a very vulnerable adult even if he was self-supporting in, say, a tech field.