Terrible advice. Ruin the audio quality and the game quality to have a little bit of a smaller download? Every game is 1gb+ nowadays, no need to compress.
OPUS is indistinguishable from lossless at very low bitrates. There's no reason a game like this couldn't be compressed with a literally imperceptible loss in media quality. Much larger games in terms of content have managed to ship at much smaller total sizes so there is precendent.
