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 
it literally does not have ironsights, 5 and infinite do have a slight zoom with LT (that in 5 adds holographic HUD effects) but no ironsights, some weapons use scopes with that input instead but its a virtual scope built into the HUD. the zoom on non-scoped weapons works nearly identical to RE Village in the OP image, where the screen zooms in and the weapon slightly shifts closer but is not centered. The pistol in 5 is almost held in an ironsight-using position but is held just underneath the HUD crosshairs at an angle
I know the lore reason for why guns like the Halo 1 pistol have scopes despite no scope being visible on the model. Actually I think in Halo 5 you could stick different attachments to your guns, one of them being some sort of ACOG dealio you could put on the AR, making it feel more like a gun from COD, which is probably what I was thinking of.
Besides, in older Halos you couldn't even zoom in with non-precision weapons, it was all hipfire or nothing
yea 4 or 5 had a microtransaction situation with unique weapon variants, some of them had scopes that worked like the other in-game virtual scopes