To be real, if autists outnumbered allistics, I think we would build the world not for them even worse than they don't build the world for us. Because we're also so rigid. Maybe we would be more accepting of differences as in not judging them personally for it, but no, the accommodations we would make for them would be less than the accommodations currently made for us. 

We are the minority and we already don't want to yield to allistics.

We keep saying we're not disabled, we're different, and it tends to lead to disability. But if the proportions were reversed we would definitely be calling them disabled. We would constantly be like "what is wrong with you, why can you not just say what you mean?"

We're already doing that now as the minority, imagine if we were the majority?? We would be tyrants.

Possibly we would be more genuinely kind to them one on one than allistics tend to be towards us at this time, but systemically we would limit their world even more than they currently limit ours.

(And don't we love our systems :)

We'd probably institutionalize them and put them in some sort of attempted conversion camp. And I'm not gonna lie I doubt we would give them less anxiety than they give us.

We would be like "I'm so sorry for making this feel difficult for you but objectively your way is wrong and does not make sense."

We would be really bad.

Imagine the rules???