Again, that number is almost certainly an insignificant risk for an individual taking a random flight to worry about. That does not imply or relate to being an insignificant number airline safety regulators should not worry about or force improvement on. Air safety has been successfully held to a much higher standard than the vast majority of other safeties, and we should definitely try to maintain that, but that's unrelated to whether it's reasonable to be personally concerned about which plane model you take your flight on due to personal risk avoidance.