@loudbatperson
I don't think a lockdown for the unvaccinated would work.
I am vaccinated, but laying here ill with Covid, having caught it of my also vaccinated daughter.
We have been very careful throughout, but have been unlucky. We don't know exactly where my daughter caught it from (likely school) but she passed it over to me.
A significant chunk of unvaccinated people in the U.K. are under 18, and since they'd still go to school...
...And covid in un-mitigated schools is what leads to more cases...
..which leads to time off school, time off work, chaos in education, economic downturns, the health service not being able to do its usual work, hospitalisations and deaths...
I'm inclined to agree with you.