No need to keep repeating that, I'm aware the ADS implementation in Halo 5 is nowhere near as awful as in most modern console shooters, I've said it many times myself; but the fact is, it is not completely cosmetic (as they said it would be back when we first saw that ADS gif) and yes, IMO it is still a terrible addition to Halo (or any shooter, really)
If you wanna keep trying to rationalize 343's decision, go ahead, but at the end of the day, both its visual implementation (gun in the middle of the screen) and the mechanical changes made to the aiming model (for autos at least) and control schemes (LT to aim control scheme users not needing to worry about de-scoping) are there to appeal to the modern shooter crowd.
The sad thing is, I could totally see them implementing full blown ADS in Halo 6 (with its usual accuracy and movement speed penalties) They probably wanted to avoid an even bigger backlash from fans, and they are just implementing ADS in phases. I hope I'm wrong, though, we definetly don't need the console shooter market to be even more homogeneous than it already is.
Awesome.
Now we just need that classic scope option and everything would be perfect (well, almost, but since I pretty much never use automatic weapons I can live with the other changes)