J's Spacers (driveshaft stretching)

[BlackLS96]

Is it true, for all you guys out there that have a dropped your cars, "the driveshafts will be stretched about 10mm each side. This will occur a lot of stress to the driveshaft. As a result, the driveshaft will wear down in a very short period of time". This is from J's AJR website, are these spacers necesarry does anyone out there have them?

Thanks