How do you make people think you aren’t incompetent?

I have autism spectrum disorder, and I HATE it. Why you might ask? Well, so many people think just because I have an autism spectrum disorder that I am incompetent, and can’t be taken seriously “oh she doesn’t know any better” “she’s got a disability, people with disabilities lie” I hate hearing that all the time. I want to go off the deep end and have sex, drink alcohol and have a boyfriend to PROVE I am not incompetent. Maybe then people will see me as competent rather than a 5 year old child. I’m tired of it.