Good point as that does seem to be the case but that’s kind of expected with electronic shifting.
I think one of the biggest issues with electronic shifting is pinching the wires. We travel with our bikes to all these races and can get in rush when putting it back together. You have to be careful when putting it together to not pinch any of the wires as they are small enough and flexible enough to be easily pinched without you noticing right away. Connections can also come loose during travel (especially if you fly with your bike) so I think all connections should be checked for proper seating. Electronics are not for everyone and people need to understand how they work. If people understood the system better, they would be cognizant of potential issues and probably have a lot less of them.
Obviously there are other cases of odd failures but with any kind of technology, you take that risk,