Not one of these statements is new, or even a worry, and especially the one about a percieved "Lack of Experience" if the "Good guys" leave - what complete tosh!
When the "Good guys" leave those who are waiting in the background will step up - and often not those you would expect.
It is obvious none of you paid any attention to the restructuring of the maintenance trades in the 90s (that continues today) where many of those Good Guys took redundancy or PVR'd - and none of you noticed.
Experience is easily found (but not normally until after you need it) and the new good guys have already learned much of it from the old good guys.