I'm sorry but this is just not acceptable in any case scenario. I don't care if it's a display of honesty or what not. You don't buy a Mercedes expecting to have to replace the tires to be able to drive it. These products do not cost anywhere near $1600 to manufacture. 80% of what you're paying is R&D cost. A problem like this is obviously oversight during R&D, so clearly we're paying for nothing. I'll reserve further judgment for when my pair arrives, whether or not it comes with the new cable, and how quickly JHA resolves the situation for me and everyone else (and that means sending a proper cable that doesn't disintegrate, not just a replacement). If my expectation are not met, you can be assured that I will not be a JHA customer in the future.
That seems reasonable.