I can't tell if you're being facetious or not, forgive me.
We can't base policy off something that effects an extreme minority of the population, like this 2.7% statistic you cited. We'd never do anything if that were the case...
The affected people should take all necessary precautions available (get vaccinated if applicable, wear a N95 or KN95 mask, shelter isolated at home, etc). Everyone else needs to go back to work, school, stores, restaurants, etc.
It's a good thing only about 2.7% of the adult population of US is immunocompromised.