We have optimized a lot of our game for the smaller download space. The reality is our game never took up 125 GB of space, but Steam required that much space to download it because the game was 62.5 GB of data (which is more in line).
Steam cuts it down even more on their end from what we upload to it from our system. And yes, we have a ton of game assets that are in the background, so we segregated the currently unused assets from the compilation. We have so much more planned that we have not revealed yet. If you were to download the game right now, having not downloaded anything previously, it would be a 10GB download because of this separation from planned vs ready features.
As for massive AAA game titles, there would be many games that don't have this much. You're right. This shows some of the largest games: https://gamerant.com/pc-games-file-size-hd-space-biggest-huge/#middle-earth-shadow-of-war-ndash-95gb
We hope the steps we're constantly taking to make this game accessible to the masses will mean more entertainment value for our gamers. I'd love to see you join us on the battlefield this weekend during our tournament!