Sunfish,
Electronics while being very reliable, do fail, they may not "wear out" as such but components fail, resistors can burn out electrolytic capacitors dry out, dry joints occur. Sadly more and more these days they are not field repairable, unlike the humble magneto.
Oktas8
Yes, I was aware that the DA42 had been operated outside the manufacturers recommended procedures. I used that incident to prove that lose of electrical power no matter how it might be caused can result in an engine failure. Unlike the old tech Lycoming or Continental engines.
Andy RR
You may well be right about the weight. They do talk about weight savings, however it appears they are talking about the weight gains due to the reduced fuel burn and the need to carry less fuel for a given mission.