Well yes and no. The thing is we have an aging population that we have to take care of and it's been growing for a while now. Consequently we don't have replacement for those unvaccinated workers, they are literally all we have.
The government offered a $15k bonus to nurses if they agreed to be full-time and it barely changed anything.
Supply & demand. Pay more, and it attracts more and better employees. Care facilities rake in tens of millions, they can afford to pay more.
I think the US needs massively better immigration customer service and expanded visa programs to attract more medical workers, especially caregivers and nurses.