That's a fair point. My napkin math doesn't account for demographic differences between the vaccinated and unvaccinated. However, the factcheck does not even me

That's a fair point. My napkin math doesn't account for demographic differences between the vaccinated and unvaccinated. However, the factcheck does not even mention your point. I guess one could argue that's yet another reason that it is indeed hand-wavy, and doesn't live up to its promise of "telling the whole story" :-)