I manage IT for an office and one of our hires said they got covid, took a month to join, and then when she showed up her manager decided to move her desk. I think maybe I got the desktop and a monitor moved before I was told to stop because she just quit. I can think of maybe 3 people in my office that have stayed for over a year, none on bad terms, just hopping jobs.
This seems like it relates a lot to the bizarre structure of hiring and salaries. You need to get any job and then any other employer will offer you a ~20% better one but no one will match inflation the next year let alone give you what they would offer if you worked somewhere else.