Part of the confusion here is that autism isn't straightforwardly a disability. A plurality of people with autism are ASD-1, which is the kind requiring the least support needs while, purely empirically speaking, conferring lots of well-documented benefits. The sort of elephant in the room in these conversations is that there are lots of replicable studies which show that autistic people outperform non-autistic people in a variety of areas. The idea of attempting to engineer the removal of a class of people from society-- people with unique strengths which are necessary for the functioning of that society-- has consequences that are significantly less well-understood than proponents of this idea make it out to be.