Anyone who claims that digital mapping displays do not constitute progress is, quite franky, talking hoop. Once mastered (which doesn't take long) the increased situational awareness, especially during times of high workload, is of great value. A good example is conducting a low-level abort due to poor weather and having to quickly adjust from working on VFR to IFR charts. This previously involved scrabbling around in the cockpit changing and re-folding maps and quickly having to transfer your position to the new chart. All quite do-able I admit but far simpler when using a modern digital display that simply involves a couple of presses of a button.
Also, having to carry charts in case the system dumps is a bit of a red herring. In the early days of Merlin this is what regulalrly happened until people realised how rare such an event was. I can recall many more examples of maps being lost prior to take-off or being sucked out of open windows/cabin doors than digital mapping systems going tits-up.