I think the SSD's that theshepherds was referring to are the ones manufacturered with an IDE or SATA controller, and are designed to appear as a standard drive to the system and OS.
It is expected from them, pretending to be normal disk.
E.g. well known compact flash memory card has de facto IDE interface, only geometry is smaller.
There exist reductions for it and you can use CF as IDE solid state drive.
But internally they perform many relocations, progressing in time by memory controller decisions.
E.g. If one uses ony 1/3 of total capacity, and performing many rewrites,
files are written in the all area of the disk, differently during time.
As result all blocks have similar write/erase counts history, what is the purpose.
Relocation applies especially for File allocation tables.
Small, byte or even bit scope writes cause need of frequent block erasure.
Any external utility has no idea, how files are really placed.