People won't just "get better", but society can be structured to become more accommodating towards different groups. In that sense, the barriers between people come down and they can collaborate and collectivize more easily. For the same reason you'll see cities with amenities for the blind or wheelchair bound, you can imagine communities that are geared to accommodate folks with neurodivergent diagnoses.

What I see - which becomes frustrating in its defeatism - is people who can't imagine a better world or are hostile to any kind of change from the standard. Folks who spit and howl over a sign language interpreter at public events or bemoan the burdensome cost of inserts into sidewalks to aid the blind (like you can find all over Japan or Belgium) make even incremental progress this endless bureaucratic burden. The idea that maybe you don't need to bombard everyone with a kaleodascope of glittery advertisements in order to hijack their attention shouldn't be as radical as it is.

But I like to think a country that's friendlier to autistic people is friendlier to everyone, for the same reason guide walks and warning sounds for the blind and visual queues for the deaf can be a boon to the sighted and hearing as well.