That's 2 that I know about on bikes that get tuned every single day by professional mechanics. I wonder if there were any other failures among the worker bees that just didn't draw media attention. At any rate, I don't think that's a very good reliability record.

How is a rear derailleur that's locked in one gear because the electronic shifting system wouldn't work not an electronic system failure? I appreciate the fact that the derailleur got kicked but the fact is that the Mavic neutral service mechanic was able to get the derailleur lined up but couldn't get it to shift.

Quality Control wonks call that "Reasonably anticipated misuse". Then there's a whole logic tree of cost/benefit decisions because you have to design around that. I wonder if the whole pack waiting up for the race leader to get a different bike is listed on that tree. If so, then it's a good design because that's what happened. Otherwise, no.