> Best estimates of IFR for SARS-CoV2 by age indicate a risk of approximately 0.004% for those under age 34
Yet broken down more narrowly, the same paper suggests 0.01% for 25 year olds, which would seem to still strongly support vaccinations for university students.
As I've noted elsewhere, the comparison is, of course, more complicated: policymakers should also consider the effect of vaccinations on community spread, since other age strata are substantially more vulnerable, as well as the non-mortality cost of infection (as economists like to frame it, in QALYs, or in terms of lost working days).
But even excluding all of that, your implication that vaccination makes one less safe is just not born out by the data you linked to.
As an aside, and to your parent comment: I do think it makes a lot more sense for these booster vaccines to be distributed to people in countries who have not had access to the initial vaccination. But, taken out of context, your comments seem to suggest that vaccination is a net negative to the health of young adults, which is not at all supported by the data shown.