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 
To be fair you'll find the same thing with HEMA people hyperfocusing on sword handling techniques and stuff too. Every game that doesnt have you holding the sword by the blade and using the thing like an axe is a failure. Unfortunately they also tend to get racist and sexist a lot quicker.
Okay but consider; actual longsword is fast, elegant, and looks awesome, and games would be much cooler if they actually incorporated elements of that in to stylized game combat.
Plus it's called "murder-bash" and it looks totally awesome so why not put it in the game?