Its not right or left or conservative its anti-authoritarian it makes perfect sense that "hippies" are now considered anti-vaxer. They want to decide what "drug" they inject and no gov should decide what isn't allowed and also no gov should decide whats mandated to inject. If its voluntary they likely dont care at all. The whole term "antivaxxer" is biased anyway. Most people now pushed in that group are not against vaccines they are against mandating, pushing, incentivizing, shaming etc. people into getting it especially if the gov is behind it.