Why doesn't Plex Media Scanner use GPU?

Multitasking the scanner and its tasks to use the gpu might help but what do you do if there is playback occurring?

Please consider the smaller machines (Apollo Lake, GeminiLake, and JasperLake) .
There’s very limited GPU bandwidth capability in their QSV circuitry.

Whatever is done must work with every supported platform

Lastly, what do you do if you’re scanning media and need playback?