It always shocks people when one says it, but after 6 months out of the workplace for absolutely any reason and in absolutely any circumstances, workers encounter serious difficulties with fitting back in. After 18 months, the difficulties become severe. If we are talking about people who don’t have conscious strategies of keeping themselves in working shape, these difficulties become insurmountable.
Even a freaking radiator stinks and makes weird noises after 6 months out of use. Humans are a bit more complex than that. You can’t put them on a shelf for a year or two and them drag them back and hope to flip a switch that would make them work.
Of course, none of this is news to those who engineered the lockdowns. The current labor shortages were manufactured on purpose. They give a great excuse to bring in migrants who’ll work for low pay and tremble in fear.
So yeah, this is “inexplicable” only to those who haven’t noticed any differences between human beings and kitchen appliances.