I have a son with severe autism. Indoctrination doesn't work on him because he doesn't even understand it.

We have actively kept soda away from him because it's bad for his teeth.

And yet, he absolutely loves the stuff (family members gave it to him). He even has severe food aversions limiting what he's willing to try.

You can't convince me that the only reason people like sugar water is because of indoctrination. That's just silly.