https://coronavirus.data.gov.uk/details/interactive-map/vaccinations
The rate of vaccination across the UK is pretty standard. This is similar to provinces across Canada.
While in the US there are regions with pathetically low vaccination rates. Those states are also the ones that have, not only removed public health measure but banned them. So their national numbers are more of an average than an overview of vaccine coverage.
So to make a finer point here. I do believe this "wave" will be similar to the UK in terms of Hospitalizations and major sickness. I think we agree on a lot of that.
Ultimately we're having a hypothetical argument on what to do if Hospitalization does become an issue again. In Ontario those stats are being measured and reported daily, so we can see who's driving the infection. Which is good.
I think Vaccine passports will have to happen, because dividing people by their chances of getting sick is fraught with issues.