That definition doesn't make sense. If someone doesn't like steak, it doesn't make them anti-meat, and if someone doesn't like mint flavor ice cream, it doesn't make them anti-ice cream. That's the entire problem with the word -- its old definition meant anti-all-birth-vaccines (which made more sense). This new definition conflates people who are anti-all-vaccines with people are anti-just-COVID-vaccines.

There is a huge difference between not wanting to take one vaccine versus not wanting to take any vaccine.