Imagine a version of modern or slightly into the future earth in which it is quite common to be born on the autism spectrum. There are still plenty of neurotypical people in the world, but I'd say at least, oh, 35% of the population fall somewhere on the spectrum, ranging from mild aspergers to experiencing severe difficulties learning to talk and processing touch (among other things; this is an oversimplification to illustrate range, not an exhaustive list of symptoms).
To prevent the scenario from becoming too depressing, let's assume that society as a whole is fairly benevolent: while being autistic might still get one labeled "weird" by neighbors or schoolmates, there is no large-scale discrimination or violence that might parallel racism. To be clear, I am NOT considering scenarios in which some sort of neurological class system emerges--although that might be an interesting follow up question ;). I'm assuming the goal of society to let everyone live as happy and productive a life as possible.
Also, assume that autism is not "curable". Some people may be able to learn to overcome some of their limitations, but re-wiring peoples' brains through medicine is not an option for either technical or ethical reasons (it really doesn't matter which).
Given these premises:
What shape does society take to better meet the needs of the increased neurodiversity of the population? What changes in the BIG PICTURE of how society is run?
Given that the issues they experience are now much more common (and support and resources are presumably now much easier to come by), how might people on the autism spectrum cope with aspects of life that they find difficult, such as sensory overstimulation? What DETAILS change regarding how these people live their everyday lives?
What are the long term effects on society?
Example lines of thought to pursue include clothing choices, company policies, laws, entertainment, social customs, etc. You don't HAVE to talk about any of these things in your answers, it's just a few things that immediately came to mind.
I'm looking for answers that are creative, realistic/respectful of how autism actually affects people, and hopefully, interesting from a story-telling perspective.
Lastly, I'd like to emphasize that this is a purely fictitious scenario and in no way reflects any predictions or beliefs on my part. Please keep it civil and based in fact.