It is.
They have expanded it from kids who rock back and fourth and scream if they are touched, to kids who have trouble reading non-verbal signals (we used to call these kids literal) to kids who are standoffish and uncommunicative or what used to be called shy.
It is sort of like calling everyone who's hair is not jet black "blond". You can raise the statistical number of blonds though the roof.
Exactamente.