I don't get, why you don't use the "fully vaccinated" chart.
Also vaccination have pretty much plateaued(!!!) in some European countries as well. In Germany the vast majority of those, that want to get vaccinated, have done so. We can consider us lucky if we get to 50%.
I'm sorry to say this, but Americans are not dumber than the rest of us. The anti-vaxx mentality is a worldwide phenomenon.