Aye, I have never understood these complaints.
If you roll for mog, youre being selfish, ninja, stealing loot from others.
If you roll for upgrade, arent you still being selfish, stealing loot from others? For every piece you win, that means someone else lost the roll, arent you taking it from them aswell?
Why is it that some players are deemed “unworthy” for loot, while others are? Why are you a jerk for rolling need, when other players hitting the same button are deemed correct? Both were there for the fight, both should have a chance at rewards.