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
Realism in games? Retvrn to Goldeneye where if you had 2 guns the brass flew out of the opposite side on your second gun because the devs just mirrored the models and animations and we liked it that way.