Inability to form our own opinions, huh? Wow... That is completely ridiculous. Have you SEEN the debates around here?
The problem of "cure", even though "cure" doesn't exist and probably won't, isn't literally the problem of being forced to take a theoretical NT pill, but the entire mindset of "cure autism".
This belief system includes concepts like, "Normal is fundamentally better." "Disability is bad, shameful, and to be erased at all costs." "If you are autistic, you are defective."
Those concepts hurt autistics because even though a cure doesn't exist, we are often treated by parents and professionals as though this theoretical, nonexistent cure were the goal. When the goal is to maximize normality, other things are often left in the dust. People whose parents want them above all to be normal will often end up losing the opportunity to use their strengths and fulfill their potential--and they may end up with psychological damage or even physical problems. They almost certainly won't be as functional as they could be, because they won't be allowed to do "odd" things that the autistic brain needs to do--stimming, special interests, privacy, non-verbal speech, etc.
When you tell somebody, "Who you are is unacceptable", they come to believe that their lives will never be good unless they get a cure. That the cure doesn't exist, and that it would change who they are if it did, makes it doubly insulting. The belief that people have to be perfect; that it's not OK to not be as good at something as other people, is extremely damaging--even to neurotypical people. When you have a disability, or are perceived as having one, it's even worse.