I don't see the terms NT and NA here as mutually exclusive... in fact, having both terms enables much greater clarity, because if NT is taken to mean "neurotypical, ie not having *any* neurological abnormalities/disorders/whatever word you want to use for AS, ADD, dyslexia, non-specific learning disability, etc", and NA = "non-autistic, ie not having any of the smaller subset of autistic conditions", then those who have dyslexia, ADD, etc, but not autism, can be accurately called NA, but not NT... in that way, you have useful terms both for "normal" and for "not autistic", to be used in relation to all neurological differences in the first case and to autism specifically in the second... and i think it's always useful to have as many clearly understood terms as possible...