How are so many places understaffed when unemployment and eviction moratoriums are gone?

I don’t believe that many people are suddenly hiding now because of CoVid and not working just waiting to get evicted. Even fast food is paying $15 an hour in states where it’s not the mandatory minimum wage - and heroic grocery store workers stayed on the job at the height of the fear pandemic.

Why would all those people not be working now? What are all these mysterious ‘better jobs’ they left for?

Are the supply shortages really because so many people are MIA?