I don't work here anymore, so I don't have a dog in this fight, but I still have friends who do, and most are trying to get out of HKG.
Bolstering one's CV is probably even more important these days than it ever was, so maybe these "new trainers" are doing just that? It does seem as though you would like guys to "just resign, today if possible", but perhaps taking a little while longer, but "leaving in better shape" has merit.