It's hard to say for sure, people who don't have the context on your statement and who misunderstand about people with autism might think you are trying to make an ironic joke.
It's possible for people to take it the wrong way and get very offended. But on the other hand you make a great point about raising awareness.
A good rule of thumb is if its controversial, keep it out of a game that's played for fun. People come here to relax, not to be political. It's unfortunate, but even some of the people who get what you're doing might not like being reminded about something they would rather not think about while playing a game recreationally.
Personally I like your idea. But I suspect others would be offended by it.