At least this suggests a possible cause of the issue has been identified and cured.
Not to me it doesn't.
It was already in the public domain that this particular battery chemistry is more prone to failure at the upper and lower limits of its capacity. If a cause had been found it would likely be at one or other of those limits and that limit only would be altered, thereby preserving at least some of the battery's capacity.
Narrowing the operating window by not charging it as high or letting it discharge so low, suggests to me that they are just improving the odds of a failure by keeping it out of the 'danger zone'.
