There appears to be an obvious connection here, where most of those leaving, or contemplating leaving, have done quite a number of years service. This reinforces the point that those who remember the quality of life and standards of service from 10 years ago or more, are quite rightly appalled by the Barnum and Baily PLC approach offered today. It also explains why new joiners are less likely to see the same problems as the more experienced personnel; if you've always been treated shabbily, you probably won't notice it when they continue to treat you shabbily.
What it further highlights is that the inhabitants of the Ivory Towers at Innsworth, Main Building or wherever, know exactly how much those terms of service have been eroded (and they have been instrumental in that erosion of course) but steadfastly refuse to acknowledge that there is a problem.
Here's a cynical thought, if you wait long enough for all you old buggers who remember being appreciated, treated with respect, and given the right equipment to do the job (in other words, stuff that costs Gordon and Tony money), to finally leave the service, are you then left with compliant young pups who know no better, or can easily be manipulated to follow the party line? Maybe creating disillusionment amongst the experienced members of the service is not viewed as a problem, maybe some Master bean-counter at Innsworth sees it as a bright new dawn, where in the future nobody has any right to respect or can remember "the good old days".