Isn't a lot of this probably just normal resignations that are not caused by covid so much as delayed by it? If X% of workers resign in a normal month for one

Isn't a lot of this probably just normal resignations that are not caused by covid so much as delayed by it? If X% of workers resign in a normal month for one reason or another, and we have a year where people can't do that or don't feel comfortable doing it, it would be expected to see a big spike once that year ends, right? Wouldn't the economical explanation be, "This system has been perturbed and has not found a new normal yet, so it's too early to extrapolate"? I guess that proving that would require lots more polling and statistical rigor and would produce no viral headlines, but it seems like a more economical explanation.