Read up, all of these have standard answers. The best answer to this argument is probably the Oak manifesto.
Low-functioning people do not seem to want cures more, inasmuch as functioning labels make sense at all and aren't missing more important aspects.
The idea of a cure has problems.
"extremely low-functioning autistic individuals" lumps a lot of things together; many people can and do express political views while unable to live independently - that is, to depend on other people to grow, prepare and transport their food, but not to feed it to them.
And I realize that seriously gruesome things have been done to left-handed people in some times and places, and that many people suffer because of attempts to train them to be right-handed, but compared to things like being beaten for fidgeting when you can't possibly stop fidgeting without having a metdown, it comes off a bit like "I have a tan so I understand black people".
Having now gotten two different responses that both missed the point I thought I was making, I'm just going to acknowledge that I must have done a bad job expressing it and start over.
I would hope (perhaps this is mind projection -- given that I would never be inclined to beat someone for fidgeting either) that the driving sentiment behind the desire to "cure" autism is not about eliminating alternative perceptual paradigms, unusually strong predispositions to literalism and consequentialism, and the like, but rather about enabling the ability to...
I ran across this article that I think is interesting. It suggests that type 2 diabetes and the increase in autism may have a common link
http://www.frontiersin.org/Cellular_Endocrinology/10.3389/fendo.2011.00054/full