In terms of gameplay mechanics, old school zoom aiming achieves the same thing as ADS. Is getting to press your nose against virtual firearms really that important in a game about shooting werevolves and vampires?
I blame this on the proliferation of Call of Duty over traditional scifi and fantasy shooter franchises. You can fucking ADS on an assault rifle in Halo now 
Can't hear their complaints over the sound of me jamming clips into my silenced dual wield Assault Rifle 15s that I fire while sliding.
Ummmmmm excuse me, ar-15 actually stands for AssSatanDevilgunKillmurder 666 Armalite Rifle-style Assault Weapon 15 ok