You're a bit late saying it's only a "very small step" to abusing children to "cure" their autism.
At least in the US, some conspiracy theorist parents, many of whom influenced by RFK Jnr and co are utterly convinced their child is somehow "broken".
As an example, some of these misguided parents have abused their child/children by giving them bleach enemas.
I shit you not
The Parents Who Give Their Children Bleach Enemas to 'Cure' Them of Autism
A substance called Miracle Mineral Solution has developed a cult following among a subset of the anti-vaxxer community, where it is believed to be a cure for everything from diabetes to AIDS.
VICE (www.vice.com)