Hate to be that guy, but as someone who works with people who have severe autism, your ideas of both sides are whack.
High functioning autists very often do not have any clear goals, it's true that many can see social interactions as games, but that's often how they steady themselves. Seeing a social interaction as a means to an end is not any unique thing for high functioning autists, it's something that people everywhere do, including low functional autists.
Low functioning autists, or severe autists will often not sperg out about things they like or about their own thoughts, that's more of a high functioning thing. Reason being, most with severe autism are unable to communicate properly, a large percentage cannot speak or make their intentions properly known to others through other means.
You don't grow out of severe autism and become highly functional, at best you find some sort of way to communicate basic things "I am hungry, I need toilet, I want to watch movie", this is often done through pictures and association training. And even more importantly, you need to have people who care enough to go through that training with you.
I have spent the last 8 years training a severely autistic person, and it was a humongous feat when just last week, he decides to, without any prompt, to put his socks in the washing machine.
That's the level we're often dealing with when speaking of low functional autists.
Most people who classify themselves as "high functional" are what would have been considered having Aspergers in the past, or as many in the vocation call it "autism lite".
Chris-chan is the perfect example of an actual high functioning autists, if anyone is doing better than him, then they should ask the doctor who assigned them that they have autism to quit his/her job and tell them to neck themselves.
You are most certainly not middle of the spectrum, the fact that you are able to consider that puts you much higher.