Crude yearly chance to die is 2.5% at 70, 4% at 75, 6% at 80, 10% at 85.
For 1 in 482 dying per month, this is roughly 2.5% chance to die per year.
If average person vaccinated was 70, the number checks out.
https://www.ssa.gov/oact/STATS/table4c6.html