They are a bunch of bullies who bully other people. Bullying is nothing new, if anything it’s a mark of pride. No, what they can’t deal with is not fitting in, somehow being different. This is why they are antivax. They would rather have dead kids than some neurodiverse weirdos. Also dead children give you a huge sympathy bonus, whereas a weird kid gets you uninvited from get togethers.

So, if you really want to upset them you have to point out just how weird their weird shit is.