> I'm inclined to agree that some folks who stayed home (by choice or not) found that ... it wasn't that bad and doing so to find something else probably seems easier than it was before.
There's this, but let's not forget that the S&P 500 is up about 40% relative to its pre-pandemic peak, so retirement accounts have been growing really fast. Staying home suddenly became an option for many.
There were already concerns about boomer retirements. Add a pandemic most dangerous to older people, lack of concern for worker safety, and massive increases in retirement accounts, and you have a lot of people that can and do stay home.