I took a look at the tweet chain that Mick Gordon replied to and it's worth a read:
Based on what I've read there and skimmed in the Reddit thread, I'm speculating that it's a clash of creatives.
What I think happened is that Mick turned in a bunch of tracks that he envisioned would work for the game, but whoever had the last touch on it decided to compress it to hell and lower the volume (as explained so well in the tweet chain) and probably also altering his tracks in ways he wouldn't have.
My best guess as to why this was done is because it can be tough to have the sound effects stand out amongst the louder music tracks (BFG Division is a perfect example), so whoever did the final mixing and mastering decided to take an axe to perform surgery so to speak, instead of consulting or listening to Mick's input on it.
rofif
, while it's likely that whatever contract Mick signed allowed id to have the final say on how his tracks are used and presented, take a moment to imagine if the majority of your GAF posts had the fonts, text colours and sizes all edited by a mod to whatever they fancy. Your message would still be conveyed but it's also not exactly how you want it to be presented.