Let me put this out there first: I don't think GD cares all that much. An artist with his amount of success, and with hsi much passion for music, I don't think he made this album to top any silly chart. He knows his art, he knows his fans.
But Gaon decided to still be stinky, and here's why:
While other charts decided they'd get with the future and count the USB as an album, Gaon stood firm and will not could an USB sales as an album sale, which strongly affects the outcome of who wins Inkigayo and Music Core especially.
It's a bummer to fans if it takes away some of GD's wins, but we have to remember that GD is pretty above it all and I'm almost certain he is just going on these shows to please his fans not to win any more awards lol.