Flash memory cell failure shows up as the memory transistor threshold gradually falling, until it gets to the point where it is not possible to determine if a 1 or a 0 was stored. This takes on the order of a million erase/write cycles. (See the Wikipedia entry for Flash memory.)

Your article is so misleading as to be completely wrong. Flash memory failure will manifest itself as increasing read errors, not the sudden and catastrophic failure which is characteristic of hard disk drives and results in total loss of everything stored on the drive.