Mech cable snapping vs forgetting to charge the battery? Yes, end user error with the battery, but I’ve had exactly 0 cables snap and I put my bikes through hell.

I've had a cable snap in a race.

I just watched a NorCal video where guy had to spend all race in little ring because it snapped at the start line. Ouch!

As long as you have access to a phillips screwdriver, you aren't stuck in the little ring - you can tighten the high limit screw to pick your one gear (at least from the higher ones).

(Replying to wmitty) it happened to him at the start line. His choice was between DNS or little ring.

I've never had a rear derailleur cable "snap"; they stretch, fray and may eventually break right at the pinch point but these are either slow delays with obvious warnings or easily fixed on the trail. Compared to a connectivity or battery issue? They don't have nearly as high of likelyhood.

I’ve seen cable breaks happen, though not frequently. I’ve also seen chains break a lot more frequently, I know of 5-6 instances where it happened last year alone locally. All of these were a result of complete lack of maintenance as you point out, though I suppose it would be possible for a newer component to not show signs of wear and still fail.