I don't particularly feel it represents me, or anything I have ever experienced.
I do not feel like I'm a missing piece of a world that I'm supposed to fit into, that's the attitude of the insensitive neurotypicals that have abused me all my life, insisting that I MUST fit into their expectations, come hell or high water.
I think the Alien better represents how I've always felt - a visitor accidentally marooned here in an unfamiliar culture, among an irrational, primitive species.
But then, neither Autism Speaks, the general Mass Media, nor any other Autism Group ever asks us what we think. As far as they're concerned, only low-functioning nonverbal autistic children have the disorder. Once you're an adult, you're not cute enough to facilitate donations anymore, so to their minds, you just cease to exist.