The rate might be higher, but we have our share of anti-vax people - including some violent protests at the Prime Minister lately, causing him to cancel rally events.
In our office, we have a number of people I know aren't vaccinated.
Not true. Germany has the "three g" mandate (and it has faced significant pushback). France has no vaccination mandate but does have policies to encourage it, which have also faced massive protests. Both and the US have first-dose vaccination rates within ten percentage points of each other.
In all three countries, the pushback is primarily from populist/right-wing political movements. This is not a strictly American phenomenon.
Besides the (insane and infuriating) politicization of the vaccine, I wonder how much of the problem comes down to a fear of the US healthcare system for those who are uninsured or have catastrophic-only coverage. I worry that people fear they'll go in for a “free” shot and end up getting a $300 bill in the mail, because hidden costs abound in the US healthcare system. (Even though we know that they won't)
Your comment was literally "#America", certainly this implies you think it's different in other countries, otherwise, why would you highlight the Americanness?