The strange situation the Biden admin created was 1) the made it unlawful to bill Medicare/medicaid for medical services provided by the unvaxxed while 2) the law does not permit the firing of unvaccinated employees (re: covid) because employees can prove no reasonable accommodation is necessary by antibody testing (this is different from influenza, where firing is permitted because no such proof of immunity is possible for each set of annual pandemic influenza strains).

So, in short, the government weaponized employers against employees. This way the government can legitimately claim they never called for the firing of any unvaccinated employee. They just required employer to take a financial loss on the deal.