0. About half a year ago, performance at read of data not read for a long time is observed to degrade.
1. Samsung acknowledges this fact.
The work around is obvious to everyone with a common sense: re-read data with old access data. This would be no fix, but the work-around of choice.
2. Samsung offers a fix some months later. Immediate observation: this fix doesn't fix the problem.
Samsung asks for more time and promises a fix.
3. Some more months later, Samsung provides the 'fix', which isn't, but the almost obvious work-around: regularly re-write (!!) the data.
Conclusions:
4. Samsung has tried to find a fix during 6 months, but in vain. The final solution is a brute-force work-around.
5. Strangely, though, the obvious work-around, that is re-read the data regularly, is not chosen. Instead, the data are re-written. This points to
6. There is more than meets the eye, because the path of no-wear, lower power re-read is not taken, but the one that uses additional power and additional life-cycles. This can't be an oversight on the side of Samsung, but intentional.
7. Why? What is it that we all don't know? There must be additional problems (unknown to me, at least) for Samsung to take this path for the work-around.