I don't know if it's true most uties/aspies are left-handed. I am, but so are both my parents, and I know my grandfather on my mom's side is left-handed at least. That whole "Most auties are left-handed" sounds like some real "right-hander research" nonsense to me. I read how lefties were once always treated like sub-human, how it's even linked to all kinds of illnesses, disorders, and even a shorter life span. They might as well put on my gravestone "Here lies (my real name), she was left-handed".
Although there's been a lot more positive stuff about lefties in recent years, like how we're apparently more creative, artistic and unconventional because our right-brain is dominate. Seems to be true in my case. I use my left hand for drawing and writing but I can use my right hand for other things if I have to. I apparently am also good at handwriting for a leftie, as I was once told, even though I have the problem with ink or pencil smearing. For years when someone's seen me draw or write something for the first time their first reaction is "Oh! You're left-handed!" I think next time I hear that I'll add sarcastically "Yes, and you know what else? I can feed and dress myself in spite of it, too!"