The fact that it happens a lot doesn't make it any less true now and the fact we've had sustained stress on the system for a year and a half isn't typical.
In the US, they've relaxed many guidelines and allowed student nurses without gaining licensure yet to practice because of the need [1].
This all pales in comparison to the mandate Biden announced last night for all healthcare staff at facilities which take Medicare/Medicaid to be required to take the vaccine. Probably a good 20% of our nursing staff is at direct risk of being lost because of that new measure.