The same thing happens with dead CD drives.
They are fine in control panels but can't read or write. I guess your new tech might think the panels are trustworthy but here we have no indication the card, cable is fine. You can get a good idea if the cable is ok by using it to some player/game console.
But the storage does seem to repeat a lot. Folk seem to not want to accept it's not working and don't want to have the card maker/vendor prove it's OK.