Disease has a very specific meaning in medicine, or indeed something of a non term depending upon the person you are speaking to, as does cure and prevention. Also yes one can not catch Autism and if it is caught or induced in some way then that way is presently unknown to science which is looking very hard for such a thing. I can not bring myself to agree with the sentiments I might be reading into your post though
"it's not a disease, it's however a differend mindset you either have at birth or you don't have it. people who tell you to cure it see you as a lesser person."
Anybody that would see you as a lesser person for such things is no clinician and at best is terribly ill informed, however treatment, medications and diagnosis do help people function better in society. Maybe at some level it is "just" a different mindset, however we all have to live in society so being able to play to it does help. I would completely agree that some aspects of society and medicine have a rather alarming habit of over diagnosing or diagnosing something which does not need it but you seem to be heading towards some "let them be" approach and that does not work for me.
first of all sorry for my slow and long response...
i do like the system that worked for me: coaching.
a member who had low level psychology degree, teached me to write down the stuff in my head that blocked me from functioning as other people around me, she then rewrote it in what she beleved to be my meaning. then we discussed it.
so now i can understand better what is the basic failure of my brain (in my case i don't understand emotions of others, or see non verbal communications). now by asking a little more questions i can function in most situations quite normal.
it will never really change some problems though, for sports like basketball i still have problems i can't overcome., but it is enough to function in society.
one other thing that's different is i need really detailed schedules for the next todo or i get into panicmode, so i use a week and day aganda to write evereything down.
no drug or medicine will ever work better than this, and they found out about a year ago a possible cause, where normal people make now connections and old connections fade a way by autistic people they don't fade away, there's just more and more.
this is why i couldn't stand teachers who used to use sub structures for equations i mean they tell me different ways to solve the same equation wich made it more problematic to oversee the basis of the question.
if a teacher thinks in solutions i can learn about anything, but if a teacher is trying to get me to his or her point of view we get nowhere.
for extreme situations this will not help much, but for most people there's nothing better than this, they can fit in society just fine.
for really autistic people not being able to have normal emotions or conversations... there's still the hope we find a medicine to stabile at least the fear response...