Die in less pain anyway?
In pain or not, either way, dead is dead. Or to put it in terms that Andrew Cuomo might use, he died, who cares?
Of course, I would not see this death in the same terms as the soon to be ex-governor, but some things are better if treated delicately and with some foresight.
Nobody ever gave the experimental COVID-19 Wuhan virus a 100% efficacy, so there will be instances where antibody production does not proceed, or the pathway for its effects on a particular biology are skewed in some manner.
One person dying is a tragedy. A million dying - is a statistic.