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 
Halo has ADS now? The west truly has fallen.
Take this guy back to 2004 before the first Call of Duty made ADS on every gun standard and other games were still feeling out this concept.
The whole 'bring the gun closer' thing was pretty common