As someone who has a family member with Autism, I'll add my voice to the people pointing out that in the cases we're talking about, the problem is not a person who is just extra "impatient". The spectrum is there to explain degrees of the issue, and it seems there are some that can learn to work with the problem. Some can't, and its not a matter of just not being taught properly. The problem with the condition not being completely understood, even by science, is that the vagueries of it make some think that people use it as an excuse for bad parenting, etc. Hey, maybe that happens with some people, but we're not talking about them.
But what is really aggravating about all of this is that if we didn't have people abusing the system or deciding, "I pay enough, I'm not standing in line on top of it." The reason Disney feels the need to change it is people who really don't need it committing outright fraud. I don't think Disney decided that too many people were cutting the line, and wanted to say someone has to be REALLY disabled. How does a company balance out stopping fraud and making sure the place is accessible to everyone? It's a problem, especially when some whiny jackasses can't help but see someone cut ahead and and think, "Hey! Why can't I do that? Why are they special?"
But again, it really all goes back to the outright frauds who somehow think it's all right to lie about a disability because THEY haven't learned patience. THOSE are the people whose parents couldn't raise them right. It all goes back to our days in school when a few kids made trouble in class and everyone else had to pay for it.