In this light, a failure rate of 2.8% (which may amount to only one amplifier module failing in each speaker) strikes me as low. I did experience the cracked cabinets issue, and it was resolved with the mid-2018 redesign of the 8Cs.
From a user’s perspective, the failure rate is more like 5.7% as there’s not much use of the second speaker of the pair when the other one is broken.