>> Still, jumping ship might be easier

wry smile. Nothing wrong with what you've said. But come to think of it, you've endorsed rachel's POV regarding the building up of resentment with this answer. If jumping ship is the kind of disruption one has to make for what amounts to "convenient excuses" (and the manager goes on to pay 3x more to "worthless" network engineers -- read her reply above), then I say, let the resentments boil over!

EDIT: improved readability