So there are now two camps apparently.
“Antivaxxers”
“Antimandaters” to vaccination but not anti vaxxers per se.
There has been two camps for a while, they are very different points of view so the argument differs between them. Why is that important? because anti vaxxers tend to be unreasonable and can't be swayed. The mandate protesters tend to have more shades or levels of objection and can be reasoned with as it's generally an informed or educated position based on rights and such. I would say the number of people who object to mandates are quite high, similar to those who object to female pilot mandates, minority mandates etc. Similar to those other mandates there are only a few who will stand up against as a point of principle. Yes you can throw in some other issues like anti authority and other issues one might have, but its not one thing. Some people have very strong views on human rights and some don't.