I.e. distros won't use it due to legal issues, enthusiasts won't use it because it's not compatible with mainline.This module right now will work on the Linux 3.8.11 kernel but the module's author says right now there are issues if using the Linux 3.9 kernel or newer.
I.e. there's a great chance this module will soon be forgotten and forsaken.
Besides who will verify its source code? What if this module inadvertently messes with the kernel memory layout and allows exploits?