That wasn't a comparison, that's just me alluding to
reports that TH is not a fan of Irish travelers.
Obviously refusing a vaccine is the ultimate "something you choose" whereas being born into one group of people is the ultimate "something you don't choose" (even putting aside that the line between the two is not always as distinct). But a punitive and vindictive attitude toward the former often goes hand in hand with racial prejudice. The most disgusting racists in America typically blame inner-city kids for "poor life choices".