I have 12 daughter with autism and other needs and she just recently started saying I hate you when she gets in mood and stomp off. I know what you mean it's hard and more challenging when there growing up. My daughter was alot easier when she was little.
If he is 18, he can live in a supported living place, it might make him happier too
Heās gotta find ways to satisfy his desire for independence and control that doesnāt involve controlling other people. Hereās what I would do in reaction to this incident if I were you: I would banish Monopoly from our household. I would replace it with paper trading /stock simulator app, and get the whole family to play it - everyone picks their own strategy and a āwinā for them doesnāt require other family to lose. Make sure to tell him itās not illegal for his brother to ācopyāāhis strategies. If that happens and he complains, tell him thatās the real point of the game. There are some pretty famous investors/tradeds like Michael Burry (confirmed Aspergerās diagnosis), Jim Simons, Jesse Livermore, and John Paulson who have achieved some of the highest returns in history. None of them came from money. They had to convince people to invest in them, so copying is a good indicator that you are winning. It might be fun to watch āthe Big Shortā (2015) as a family. Good luck!
Hereās the thing, Go with your son flow, but tell his brother the real deal later on. You have to flow with his diagnosis not go against it. Itās already hard on him enough that he is dealing with a lot of it and for the rest of his life. Try to take it easy and see the world from his view. Invite yourself in. In the meantime seek guidance, help and professionals that are experts in this and can give you resources and teach you resources to deal with an intelligent cool rockstar!