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 
Apex is slow as molasses. TItanfall 2 and Tribes 3 are where you need to be if you gotta go fast. Destiny is basically a 1968 Oldsmobile Land Cow Deluxe trying to cough and choke it's way up a thirty degree grade in the andes by comparison.