Why?
If the vaccine worked as they promised us it would, all of the deaths would be coming out of the unvaccinated pool, no matter what the percentage of it is.
First, it is a given that the vaxx is not 100% effective, especially for newer variants.
If all were vaxxed, any covid-related deaths (from or with) would be a vaxxed person, so the statistics would be meaningless.
Also, if the “other vaxxed” was only 1% of the population, then the unvaxxed would have a roughly 10x chance of dying from or with covid.
However, the split is 50/50, so there is meaningful information in the data.