I get what Ralph is saying, the rates are usurious, but like many things in this game, it is just part of the time sink that poses as game play.
As it is, this is one of the reasons that keeps my fleet to the same five ships for the last couple of years. They are all mostly engineered, I need to finish some modules but I can wait. I do the things I enjoy.
As far as holiday staffing, they've got a captive audience, if they go dark for a bit, it's not a critical need so they act accordingly. We can always play at another time. TBH, I was "discomfited" when the game failed to load a day or so ago but I got over it. It seemed that quite a few others were affected as well.