I did. Saying that a person is not living a life worth living is a short, short hop from saying "well, why are we spending all these resources to keep them alive?"

Further up the chain, somebody also mentioned detecting autism pre-birth. While this could lead to earlier intervention for autistic children, it also would lead to an increase in selective abortion of autistic fetuses, the same as any other condition we screen for. Which is a simple form of eugenics.