I don't see the link between the article and being autistic. Do you differentiate between being autistic, i.e. having a different but equally valid perspective on the world and being called autistic, implying otherness, deficiency and invalidating the autistic perspective. Having a voice and having it heard is not toxic. Using ableist tactics to silent voices of a minority group is toxic.
Having a voice that promotes equality of opportunity and advocates for a minority group to overcome the disadvantage of their disability and achieve their life goals on the par with non-disabled people is advocating for equality, which is protected the law in this country. Advocating for equality of a disadvantaged group, for help that is helpful is not divisive. Equality benefits society as whole, it is for common benefit. Labeling advocating equality as toxic is an ableist silencing tactic. Don't fall for it.