For anyone having issues with the #ActuallyAutistic hashtag, there is also #AllAutistics and @allautistics (the latter being a recently created group that you can follow and post to).
They are intended for anyone who is (or thinks they might be) autistic (formally or self-diagnosed).
[I wasn't trying to be controlling & suggest that there must be one and only one hashtag that everyone used, but I do think we need one tag with enough of a critical mass to let new members quickly locate a wide and diverse community.]