A lot of normal people have their own problems, the most common of which is low intelligence (by definition, half the population has to be of below-average intelligence). What I'll do when I get that kind of reaction from normals is not disabuse them of their misperceptions. For one thing, they likely aren't bright enough to understand; and for another, being underestimated has its advantages.
Having said this, I've never met another person I know for a fact who has AS face-to-face. But I do have a kid with regular autism who volunteers. It is very obvious that he's not normal, though he's certainly a good kid. I've had to run off a couple of bullies who were giving him a hard time. Again, these types of normals have their own problems. I feel sorry for them, even though I don't put up with any nonsense out of them.