mothers and fathers continue to support their children with autism into adulthood. I don't mean financially but emotionally and socially. They don't get to skip off into the sunset.
But most of the time they don't WANT to skip off into the sunset. They love their children, they want the best for them, they find ways of supporting them.
I think this whole argument is a bit nonsensical. Babies are "selfish", families have to fit around screaming babies, and toddlers all the time, adolescents are often extremely "selfish" and make family life impossible. I use the word "Selfish" to mean unable to see the parents' or siblings' point of view. Everyone has to fit in with developmental stages which are "selfish" and cause other people pain, all the time. Mothers with PND, fathers and mothers who have marriage breakdown for whatever reason, grandparents who are sick and need extra care, losing your job, a job with long hours that is unavoidable for the family's welfare..all these things affect siblings and parents and they might not be things you CHOOSE to happen to your family.
Having a sibling with autism or a child with autism, might or might not be destructive and upsetting to members of your family. But it isn't something you can stop, anymore than you can prevent your mum getting PND. What you can do, is make the condition less painful to those around you, by understanding WHY you or your child melts down and attacks others/withdraws emotion, fixates. You can support them and make strategic interventions..plan the day..plan for extra help, set boundaries, explain things. You cannot just say oh they are so selfish and ruin everything for everybody, it isn't fair.
Anymore than an autistic person is entitled to say, my life is miserable it isn't fair, everyone is to blame... I love my life, I love my special interests, I love my children (one of my special interests if I think about it) I love my spidey sense (call it sensory overload sometimes) No I don't like being anxious about things that other people can manage easily (M4 anyone..or how about holding a big dinner party for 10 people, or doing five errands in swift succession, or talking to someone in the car whilst trying to drive...no cannot do any of those things) I'm sure my mother had a hard time dealing with me, yes, I can look back and think it must have been "tiring" for her.
But it is nonsense to say autistic people don't understand how others feel. At stages in your life, perhaps you are more prone to being anxious and fixed, which might and probably does affect others. But that isn't the same as not understanding other people, we are picking up on how other NT people feel the entire time, it is part of our sensory overload, that we cannot tune OUT.