Because not everything that happens on Linux is Linux's fault, any more than every thing that goes wrong on Windows is Microsoft's fault? Sometimes it's user error, sometimes it's faulty hardware, sometimes it is the operating system. You don't just lay blame on the operating system for everything that's not working though (although I do see a lot of people do exactly that, despite it not being logical).
As an example; Many folks commenting above appear to have never experienced a problem with hard drives spinning down during a backup, or it causing a remount at a different mount point. This leads to thinking it might not be an operating system issue, but rather something strange about that specific external hard drive.
As an example; Many folks commenting above appear to have never experienced a problem with hard drives spinning down during a backup, or it causing a remount at a different mount point. This leads to thinking it might not be an operating system issue, but rather something strange about that specific external hard drive.