I am not the guy with the most knowledge here either, but this is how I understand it, when making beer, and repitching for multiple generations, the yeast needs oxygen for 2 reasons. So the yeast can reproduce, and also produce sterols and fatty acids used during fermentation. One time at a brewery we ran out of oxygen, and overpitched yeast and added a little olive oil to the wort. Sounds really weird, but apparently they are an easy to find source of sterols. Dry yeast is grown in a oxygen rich environment, and is rich in sterols, and most distiller's mashes are rich in fatty acids, so if you pitch enough, no oxygen needed. Correct me if I'm mistaken.
If in the real world it smells better, I guess you can't argue with results.