They're struggling to even exercise basic human rights (freedom of movement, opinion, peaceful association, speech, etc, etc. There is probably a right for healthcare self-determination slipped in to the Universal Deceleration of Human Rights too it seems like the sort of thing they'd slip in). There is room to argue about whether the UDoHR applies here, but it is very notable that the anti-vaxers have nearly no power to have a quite reasonable interpretation stick.

Their opinions just don't matter. They appear to be on the verge of being confined to their homes while being widely condemned and socially ostracised. They are likely to be fired. Which is why it is so concerning that systematic oppression is being bought in to deal with them - this is Google crossing scary lines that didn't need to be crossed.